diff --git a/source/literal.c b/source/literal.c
index 06b80ac..76ffa5c 100644
--- a/source/literal.c
+++ b/source/literal.c
@@ -380,7 +380,8 @@ int hashLiteral(Literal lit) {
 		}
 
 		case LITERAL_FUNCTION:
-			return 0;
+		case LITERAL_FUNCTION_NATIVE:
+			return 0; //TODO: find a way to hash these properly
 
 		case LITERAL_IDENTIFIER:
 			return HASH_I(lit); //pre-computed
diff --git a/source/literal_dictionary.c b/source/literal_dictionary.c
index 42b8455..ed708f4 100644
--- a/source/literal_dictionary.c
+++ b/source/literal_dictionary.c
@@ -136,7 +136,13 @@ void freeLiteralDictionary(LiteralDictionary* dictionary) {
 
 void setLiteralDictionary(LiteralDictionary* dictionary, Literal key, Literal value) {
 	if (IS_NULL(key)) {
-		fprintf(stderr, ERROR "[internal] Dictionaries can't have null keys (get)\n" RESET);
+		fprintf(stderr, ERROR "Dictionaries can't have null keys (get)\n" RESET);
+		return;
+	}
+
+	//BUGFIX: Can't hash a function
+	if (IS_FUNCTION(key) || IS_FUNCTION_NATIVE(key)) {
+		fprintf(stderr, ERROR "Dictionaries can't have function keys (get)\n" RESET);
 		return;
 	}
 
@@ -150,7 +156,13 @@ void setLiteralDictionary(LiteralDictionary* dictionary, Literal key, Literal va
 
 Literal getLiteralDictionary(LiteralDictionary* dictionary, Literal key) {
 	if (IS_NULL(key)) {
-		fprintf(stderr, ERROR "[internal] Dictionaries can't have null keys (set)\n" RESET);
+		fprintf(stderr, ERROR "Dictionaries can't have null keys (set)\n" RESET);
+		return TO_NULL_LITERAL;
+	}
+
+	//BUGFIX: Can't hash a function
+	if (IS_FUNCTION(key) || IS_FUNCTION_NATIVE(key)) {
+		fprintf(stderr, ERROR "Dictionaries can't have function keys (set)\n" RESET);
 		return TO_NULL_LITERAL;
 	}
 
@@ -166,7 +178,13 @@ Literal getLiteralDictionary(LiteralDictionary* dictionary, Literal key) {
 
 void removeLiteralDictionary(LiteralDictionary* dictionary, Literal key) {
 	if (IS_NULL(key)) {
-		fprintf(stderr, ERROR "[internal] Dictionaries can't have null keys (remove)\n" RESET);
+		fprintf(stderr, ERROR "Dictionaries can't have null keys (remove)\n" RESET);
+		return;
+	}
+
+	//BUGFIX: Can't hash a function
+	if (IS_FUNCTION(key) || IS_FUNCTION_NATIVE(key)) {
+		fprintf(stderr, ERROR "Dictionaries can't have function keys (remove)\n" RESET);
 		return;
 	}