diff --git a/src/plugins/cpptools/symbolfinder.cpp b/src/plugins/cpptools/symbolfinder.cpp
index 0c0c1f3d15a..7147f1d1c41 100644
--- a/src/plugins/cpptools/symbolfinder.cpp
+++ b/src/plugins/cpptools/symbolfinder.cpp
@@ -436,6 +436,9 @@ QList<Declaration *> SymbolFinder::findMatchingDeclaration(const LookupContext &
                                                            Function *functionType)
 {
     QList<Declaration *> result;
+    if (!functionType)
+        return result;
+
     QList<Declaration *> nameMatch, argumentCountMatch, typeMatch;
     findMatchingDeclaration(context, functionType, &typeMatch, &argumentCountMatch, &nameMatch);
     result.append(typeMatch);