diff --git a/src/Bindings/ManualBindings.h b/src/Bindings/ManualBindings.h
index 83b960058..f8c9b96de 100644
--- a/src/Bindings/ManualBindings.h
+++ b/src/Bindings/ManualBindings.h
@@ -253,8 +253,9 @@ public:
 		// Check params:
 		cLuaState L(tolua_S);
 		if (
-			!L.CheckParamNumber(2, 5) ||
-			!L.CheckParamFunction(6)
+			!L.CheckParamNumber(2, 4) ||
+			!L.CheckParamFunction(5) ||
+			!L.CheckParamEnd(6)
 		)
 		{
 			return 0;
@@ -316,8 +317,9 @@ public:
 		// Check params:
 		cLuaState L(tolua_S);
 		if (
-			!L.CheckParamNumber(2, 4) ||
-			!L.CheckParamFunction(5)
+			!L.CheckParamNumber(2, 3) ||
+			!L.CheckParamFunction(4) ||
+			!L.CheckParamEnd(5)
 		)
 		{
 			return 0;