diff --git a/interactions.c b/interactions.c
index fe7a6e7..702f662 100644
--- a/interactions.c
+++ b/interactions.c
@@ -187,15 +187,19 @@ void dir_changed(){
 }
 void move_down(unsigned long passes){
 
-	/*bounds checking happens within thread_mid*/
 	mid_dir.current_file += passes;
+	if (mid_dir.current_file > mid_dir.file_list + mid_dir.file_count - 1) { 
+		mid_dir.current_file = mid_dir.file_list + mid_dir.file_count - 1;
+	}
 
 	status |= (STATUS_RUN_BACKEND);
 }
 void move_up(unsigned long passes){
 
-	/*bounds checking happens within thread_mid*/
 	mid_dir.current_file -= passes; 
+	if (mid_dir.current_file < mid_dir.file_list) {
+		mid_dir.current_file = mid_dir.file_list;
+	}
 
 	status |= (STATUS_RUN_BACKEND);
 }