diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index d0178a211..309ef2f9f 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -253,6 +253,8 @@ void CheckOther::checkIncorrectLogicOperator()
             if (Token::Match(term1Tok, "%var% != %num%"))
             {
                 const unsigned int varId = term1Tok->varId();
+                if (!varId)
+                    continue;
                 firstConstant = term1Tok->tokAt(2)->str();
 
                 if (Token::Match(term2Tok, "%varid% != %num%", varId))