diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index b6dbf6d28..367cc721f 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -2638,7 +2638,7 @@ void CheckOther::checkVarFuncNullUB()
                     if (f && f->argCount() <= argnr) {
                         const Token *tok2 = f->argDef;
                         tok2 = tok2 ? tok2->link() : nullptr; // goto ')'
-                        if (Token::simpleMatch(tok2->tokAt(-3), ". . ."))
+                        if (tok2 && Token::simpleMatch(tok2->tokAt(-3), ". . ."))
                             varFuncNullUBError(tok);
                     }
                 }