diff --git a/lib/parser/crystal.rb b/lib/parser/crystal.rb
index bb824202..d9712d15 100644
--- a/lib/parser/crystal.rb
+++ b/lib/parser/crystal.rb
@@ -29,6 +29,6 @@ module Parser
     include FunctionDefinition
     include Operators
 
-    rule(:root){ (function_definition | expression | operator_expression | call_site).repeat }
+    rule(:root){ (function_definition | expression | operator_expression | call_site | space).repeat }
   end
 end