diff --git a/filesystem/Upload.php b/filesystem/Upload.php
index 7af603fb2..549b12752 100644
--- a/filesystem/Upload.php
+++ b/filesystem/Upload.php
@@ -498,7 +498,7 @@ class Upload_Validator {
 			$arg = File::format_size($this->getAllowedMaxFileSize($ext));
 			$this->errors[] = _t(
 				'File.TOOLARGE', 
-				'Filesize is too large, maximum {size} allowed.',
+				'Filesize is too large, maximum {size} allowed',
 				'Argument 1: Filesize (e.g. 1MB)',
 				array('size' => $arg)
 			);
diff --git a/forms/ConfirmedPasswordField.php b/forms/ConfirmedPasswordField.php
index 213150b8b..26dc86a9b 100644
--- a/forms/ConfirmedPasswordField.php
+++ b/forms/ConfirmedPasswordField.php
@@ -280,7 +280,7 @@ class ConfirmedPasswordField extends FormField {
 			if(!preg_match('/^(([a-zA-Z]+\d+)|(\d+[a-zA-Z]+))[a-zA-Z0-9]*$/',$value)) {
 				$validator->validationError(
 					'Password', 
-					_t('Form.VALIDATIONSTRONGPASSWORD', "Passwords must have at least one digit and one alphanumeric character."), 
+					_t('Form.VALIDATIONSTRONGPASSWORD', "Passwords must have at least one digit and one alphanumeric character"), 
 					"validation", 
 					false
 				);
diff --git a/forms/CreditCardField.php b/forms/CreditCardField.php
index 4174ffd32..9291b632f 100644
--- a/forms/CreditCardField.php
+++ b/forms/CreditCardField.php
@@ -53,7 +53,7 @@ class CreditCardField extends TextField {
 					$this->name,
 					_t(
 						'Form.VALIDATIONCREDITNUMBER', 
-						"Please ensure you have entered the {number} credit card number correctly.",
+						"Please ensure you have entered the {number} credit card number correctly",
 						array('number' => $number)
 					),
 					"validation",
diff --git a/forms/CurrencyField.php b/forms/CurrencyField.php
index 9ef8c48dc..486d95f72 100644
--- a/forms/CurrencyField.php
+++ b/forms/CurrencyField.php
@@ -44,7 +44,7 @@ class CurrencyField extends TextField {
 
 	function validate($validator) {
 		if(!empty ($this->value) && !preg_match('/^\s*(\-?\$?|\$\-?)?(\d{1,3}(\,\d{3})*|(\d+))(\.\d{2})?\s*$/', $this->value)) {
-			$validator->validationError($this->name, _t('Form.VALIDCURRENCY', "Please enter a valid currency."), "validation", false);
+			$validator->validationError($this->name, _t('Form.VALIDCURRENCY', "Please enter a valid currency"), "validation", false);
 			return false;
 		}
 		return true;
diff --git a/forms/DateField.php b/forms/DateField.php
index 4d609abf9..4df3dec24 100644
--- a/forms/DateField.php
+++ b/forms/DateField.php
@@ -311,7 +311,7 @@ class DateField extends TextField {
 			$validator->validationError(
 				$this->name, 
 				_t(
-					'DateField.VALIDDATEFORMAT2', "Please enter a valid date format ({format}).", 
+					'DateField.VALIDDATEFORMAT2', "Please enter a valid date format ({format})", 
 					array('format' => $this->getConfig('dateformat'))
 				), 
 				"validation", 
diff --git a/forms/EmailField.php b/forms/EmailField.php
index 28357de3a..1cd2c82aa 100644
--- a/forms/EmailField.php
+++ b/forms/EmailField.php
@@ -39,7 +39,7 @@ class EmailField extends TextField {
 		if($this->value && !preg_match('/' . $pregSafePattern . '/i', $this->value)){
 			$validator->validationError(
 				$this->name,
-				_t('EmailField.VALIDATION', "Please enter an email address."),
+				_t('EmailField.VALIDATION', "Please enter an email address"),
 				"validation"
 			);
 			return false;
diff --git a/forms/RequiredFields.php b/forms/RequiredFields.php
index c874c7971..a85377550 100644
--- a/forms/RequiredFields.php
+++ b/forms/RequiredFields.php
@@ -85,7 +85,7 @@ class RequiredFields extends Validator {
 				}
 
 				if($formField && $error) {
-					$errorMessage = sprintf(_t('Form.FIELDISREQUIRED', '%s is required').'.', strip_tags('"' . ($formField->Title() ? $formField->Title() : $fieldName) . '"'));
+					$errorMessage = sprintf(_t('Form.FIELDISREQUIRED', '%s is required'), strip_tags('"' . ($formField->Title() ? $formField->Title() : $fieldName) . '"'));
 					if($msg = $formField->getCustomValidationMessage()) {
 						$errorMessage = $msg;
 					}
diff --git a/forms/TableField.php b/forms/TableField.php
index 07002ecac..969c22e18 100644
--- a/forms/TableField.php
+++ b/forms/TableField.php
@@ -521,7 +521,7 @@ class TableField extends TableListField {
 						if(!trim($fieldObj->Value())){
 							$title = $fieldObj->Title();
 							$errorMessage .= sprintf(
-								_t('TableField.ISREQUIRED', "In %s '%s' is required."),
+								_t('TableField.ISREQUIRED', "In %s '%s' is required"),
 								$this->name,
 								$title
 							);
diff --git a/forms/Validator.php b/forms/Validator.php
index 4194f21f4..0bf4ed81e 100644
--- a/forms/Validator.php
+++ b/forms/Validator.php
@@ -103,10 +103,10 @@ abstract class Validator extends Object {
 	function requireField($fieldName, $data) {
 		if(is_array($data[$fieldName]) && count($data[$fieldName])) {
 			foreach($data[$fieldName] as $componentkey => $componentVal){
-				if(!strlen($componentVal)) $this->validationError($fieldName, "$fieldName $componentkey is required.", "required");
+				if(!strlen($componentVal)) $this->validationError($fieldName, "$fieldName $componentkey is required", "required");
 			}
 			
-		}else if(!strlen($data[$fieldName])) $this->validationError($fieldName, "$fieldName is required.", "required");
+		}else if(!strlen($data[$fieldName])) $this->validationError($fieldName, "$fieldName is required", "required");
 	}
 	
 	/**
diff --git a/lang/en.yml b/lang/en.yml
index 55724b51e..5dae0af43 100644
--- a/lang/en.yml
+++ b/lang/en.yml
@@ -122,7 +122,7 @@ en:
   DateField:
     NOTSET: 'not set'
     TODAY: today
-    VALIDDATEFORMAT2: 'Please enter a valid date format ({format}).'
+    VALIDDATEFORMAT2: 'Please enter a valid date format ({format})'
     VALIDDATEMAXDATE: 'Your date has to be older or matching the maximum allowed date ({date})'
     VALIDDATEMINDATE: 'Your date has to be newer or matching the minimum allowed date ({date})'
   Director:
@@ -130,7 +130,7 @@ en:
   DropdownField:
     CHOOSE: (Choose)
   EmailField:
-    VALIDATION: 'Please enter an email address.'
+    VALIDATION: 'Please enter an email address'
   Email_BounceRecord:
     PLURALNAME: 'Email Bounce Records'
     SINGULARNAME: 'Email Bounce Record'
@@ -146,7 +146,7 @@ en:
     Name: Name
     PLURALNAME: Files
     SINGULARNAME: File
-    TOOLARGE: 'Filesize is too large, maximum {size} allowed.'
+    TOOLARGE: 'Filesize is too large, maximum {size} allowed'
     TOOLARGESHORT: 'Filesize exceeds {size}'
     Title: Title
   FileIFrameField:
@@ -170,13 +170,13 @@ en:
     TEXT3: for
   Form:
     FIELDISREQUIRED: '%s is required'
-    VALIDATIONCREDITNUMBER: 'Please ensure you have entered the {number} credit card number correctly.'
+    VALIDATIONCREDITNUMBER: 'Please ensure you have entered the {number} credit card number correctly'
     VALIDATIONNOTUNIQUE: 'The value entered is not unique'
     VALIDATIONPASSWORDSDONTMATCH: 'Passwords don''t match'
     VALIDATIONPASSWORDSNOTEMPTY: 'Passwords can''t be empty'
-    VALIDATIONSTRONGPASSWORD: 'Passwords must have at least one digit and one alphanumeric character.'
+    VALIDATIONSTRONGPASSWORD: 'Passwords must have at least one digit and one alphanumeric character'
     VALIDATOR: Validator
-    VALIDCURRENCY: 'Please enter a valid currency.'
+    VALIDCURRENCY: 'Please enter a valid currency'
   FormField:
     NONE: none
   GridAction:
@@ -455,7 +455,7 @@ en:
   SiteTree:
     TABMAIN: Main
   TableField:
-    ISREQUIRED: 'In %s ''%s'' is required.'
+    ISREQUIRED: 'In %s ''%s'' is required'
   TableField.ss:
     ADD: 'Add a new row'
   TableListField:
diff --git a/lang/en_GB.yml b/lang/en_GB.yml
index b51ebc87d..5d0d5663b 100644
--- a/lang/en_GB.yml
+++ b/lang/en_GB.yml
@@ -98,7 +98,7 @@ en_GB:
   DropdownField:
     CHOOSE: "(Choose)"
   EmailField:
-    VALIDATION: "Please enter an email address."
+    VALIDATION: "Please enter an email address"
   File:
     Content: "Content"
     Filename: "Filename"
@@ -107,7 +107,7 @@ en_GB:
     Name: "Name"
     PLURALNAME: "Files"
     SINGULARNAME: "File"
-    TOOLARGE: "Filesize is too large; maximum %s is allowed."
+    TOOLARGE: "Filesize is too large; maximum %s is allowed"
     Title: "Title"
   ForgotPasswordEmail.ss:
     HELLO: "Hello"
@@ -115,15 +115,15 @@ en_GB:
     TEXT2: "password reset link"
     TEXT3: "for"
   Form:
-    FIELDISREQUIRED: "%s is required."
-    VALIDATIONCREDITNUMBER: "Please ensure you have entered the %s credit card number correctly."
+    FIELDISREQUIRED: "%s is required"
+    VALIDATIONCREDITNUMBER: "Please ensure you have entered the %s credit card number correctly"
     VALIDATIONFAILED: "Validation failed"
     VALIDATIONNOTUNIQUE: "The value entered is not unique"
     VALIDATIONPASSWORDSDONTMATCH: "Passwords don't match"
     VALIDATIONPASSWORDSNOTEMPTY: "Passwords can't be empty"
-    VALIDATIONSTRONGPASSWORD: "Passwords must have at least one digit and one alphanumeric character."
+    VALIDATIONSTRONGPASSWORD: "Passwords must have at least one digit and one alphanumeric character"
     VALIDATOR: "Validator"
-    VALIDCURRENCY: "Please enter a valid currency."
+    VALIDCURRENCY: "Please enter a valid currency"
   FormField:
     NONE: "none"
   Group:
@@ -265,7 +265,7 @@ en_GB:
   SiteTree:
     TABMAIN: "Main"
   TableField:
-    ISREQUIRED: "In %s '%s' is required."
+    ISREQUIRED: "In %s '%s' is required"
   TableField.ss:
     ADD: "Add a new row"
   TableListField:
diff --git a/tests/filesystem/UploadTest.php b/tests/filesystem/UploadTest.php
index d3f112384..6eb3d517b 100644
--- a/tests/filesystem/UploadTest.php
+++ b/tests/filesystem/UploadTest.php
@@ -335,7 +335,7 @@ class UploadTest_Validator extends Upload_Validator implements TestOnly {
 			$arg = File::format_size($this->getAllowedMaxFileSize($ext));
 			$this->errors[] = _t(
 				'File.TOOLARGE', 
-				'Filesize is too large, maximum {size} allowed.',
+				'Filesize is too large, maximum {size} allowed',
 				'Argument 1: Filesize (e.g. 1MB)',
 				array('size' => $arg)
 			);
diff --git a/tests/forms/FormTest.php b/tests/forms/FormTest.php
index 61acf536f..c848a1d05 100644
--- a/tests/forms/FormTest.php
+++ b/tests/forms/FormTest.php
@@ -204,14 +204,14 @@ class FormTest extends FunctionalTest {
 		$this->assertPartialMatchBySelector(
 			'#Email span.message',
 			array(
-				_t('EmailField.VALIDATION', "Please enter an email address.")
+				'Please enter an email address'
 			),
 			'Formfield validation shows note on field if invalid'
 		);
 		$this->assertPartialMatchBySelector(
 			'#SomeRequiredField span.required',
 			array(
-				sprintf(_t('Form.FIELDISREQUIRED').'.','"SomeRequiredField"')
+				'"SomeRequiredField" is required'
 			),
 			'Required fields show a notification on field when left blank'
 		);