diff --git a/src/parser.c b/src/parser.c
index b97beec..d2c91fc 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -23,9 +23,11 @@ Token* ParserExpect(TokenType type);
 Token* ParserExpectList(int count, ...);
 Token* ParserWant(TokenType type);
 void ParserExpectLineEnd(void);
-void ParserSync(char* format, ...);
-void ParserSyncExpect(TokenType expected, TokenType found);
-void ParserSyncMessage(char* message);
+//Some more on atrributes:
+//https://gcc.gnu.org/onlinedocs/gcc-3.1/gcc/Function-Attributes.html#Function%20Attributes
+void ParserSync(char* format, ...) __attribute__ ((noreturn));
+void ParserSyncExpect(TokenType expected, TokenType found) __attribute__ ((noreturn));
+void ParserSyncMessage(char* message) __attribute__ ((noreturn));
 Instruction* ParserCreateInstruction(void);
 
 Instructions* ParseTokens(Array* tokens) {
@@ -109,7 +111,7 @@ void ParserHandleMnemonic(Mnemonics mnemonic) {
         case ADD:
             inst->ParameterCount = 2;
             
-            PARSER_EXPECT_LIST(LineEnd, Colon, Comma);
+            ParserExpects(LineEnd, Colon, Comma);
 
             break;
         default: