diff --git a/languages/clang/duchain/unknowndeclarationproblem.cpp b/languages/clang/duchain/unknowndeclarationproblem.cpp
--- a/languages/clang/duchain/unknowndeclarationproblem.cpp
+++ b/languages/clang/duchain/unknowndeclarationproblem.cpp
@@ -180,7 +180,7 @@
         }
 
         const auto match = mocFilenameExpression.match(importFilename);
-        if (match.isValid()) {
+        if (match.hasMatch()) {
             clangDebug() << "moc file detected in" << source.toUrl().toDisplayString() << ":" << importFilename << "-- not using as include insertion location";
             continue;
         }
diff --git a/languages/clang/tests/test_problems.cpp b/languages/clang/tests/test_problems.cpp
--- a/languages/clang/tests/test_problems.cpp
+++ b/languages/clang/tests/test_problems.cpp
@@ -328,11 +328,11 @@
     // cf. bug 375274
     QTest::newRow("ignore-moc-at-end")
         << "class Foo {};\n"
-        << "int main() { Foo foo; }\n#include \"dummyInclude\"\n"
+        << "#include <vector>\nint main() { Foo foo; }\n#include \"dummyInclude\"\n"
         << "/moc_fooXXXXXX.cpp"
         << QVector<ClangFixit>{
             ClangFixit{"class Foo;\n", DocumentRange(IndexedString(QDir::tempPath() + "/workingFile.h"), KTextEditor::Range(0, 0, 0, 0)), QString()},
-            ClangFixit{"#include \"includeFile.h\"\n", DocumentRange(IndexedString(QDir::tempPath() + "/workingFile.h"), KTextEditor::Range(0, 0, 0, 0)), QString()}
+            ClangFixit{"#include \"includeFile.h\"\n", DocumentRange(IndexedString(QDir::tempPath() + "/workingFile.h"), KTextEditor::Range(1, 0, 1, 0)), QString()}
         };
     QTest::newRow("ignore-moc-at-end2")
         << "class Foo {};\n"