diff --git a/hscript/Parser.hx b/hscript/Parser.hx
index 78af119..3ae5b14 100644
--- a/hscript/Parser.hx
+++ b/hscript/Parser.hx
@@ -1443,7 +1443,8 @@ class Parser {
 		case EBinop("||", e1, e2):
 			return evalPreproCond(e1) || evalPreproCond(e2);
 		default:
-			error(EInvalidPreprocessor("Can't eval "+expr(e).getName()), readPos, readPos);
+			error(EInvalidPreprocessor("Can't eval " + expr(e).getName()), readPos, readPos);
+			return null;
 		}
 	}