diff --git a/syncode/parsers/grammars/c_grammar.lark b/syncode/parsers/grammars/c_grammar.lark
index bc6cd343..28b55f68 100644
--- a/syncode/parsers/grammars/c_grammar.lark
+++ b/syncode/parsers/grammars/c_grammar.lark
@@ -4,7 +4,7 @@
 
 start: declaration*
 
-declaration: data_type NAME "(" parameter? ")" "{" statement* "}"
+declaration: data_type NAME "(" parameters? ")" "{" statement* "}"
 
 statement: data_type NAME "=" expression ";" 
             | NAME  "="  expression ";" 
@@ -19,6 +19,7 @@ statement: data_type NAME "=" expression ";"
 data_type: "int" | "float"  | "char" | "void"
 NAME: /[a-zA-Z_][a-zA-Z_0-9]*/
 
+parameters: parameter ("," parameter)*
 parameter: data_type NAME
 
 for_init: data_type NAME  "="  expression | NAME  "="  expression