diff --git a/src/plugins/designer/qtcreatorintegration.cpp b/src/plugins/designer/qtcreatorintegration.cpp
index 54603775543..6aee60a7974 100644
--- a/src/plugins/designer/qtcreatorintegration.cpp
+++ b/src/plugins/designer/qtcreatorintegration.cpp
@@ -392,12 +392,14 @@ void QtCreatorIntegration::slotNavigateToSlot(const QString &objectName, const Q
 // Build name of the class as generated by uic, insert Ui namespace
 // "foo::bar::form" -> "foo::bar::Ui::form"
 
-static inline QString uiClassName(QString formObjectName)
+static inline const QStringList uiClassNames(QString formObjectName)
 {
     const int indexOfScope = formObjectName.lastIndexOf("::");
     const int uiNameSpaceInsertionPos = indexOfScope >= 0 ? indexOfScope + 2 : 0;
+    QString alt = formObjectName;
     formObjectName.insert(uiNameSpaceInsertionPos, "Ui::");
-    return formObjectName;
+    alt.insert(uiNameSpaceInsertionPos, "Ui_");
+    return {formObjectName, alt};
 }
 
 static Document::Ptr getParsedDocument(const QString &fileName,
@@ -485,28 +487,34 @@ bool QtCreatorIntegration::navigateToSlot(const QString &objectName,
 
     QDesignerFormWindowInterface *fwi = FormEditorW::activeWidgetHost()->formWindow();
 
-    const QString uiClass = uiClassName(fwi->mainContainer()->objectName());
-
-    if (Designer::Constants::Internal::debug)
-        qDebug() << "Checking docs for " << uiClass;
-
-    // Find the class definition (ui class defined as member or base class)
-    // in the file itself or in the directly included files (order 1).
+    QString uiClass;
     const Class *cl = nullptr;
     Document::Ptr declDoc;
-    for (const Document::Ptr &d : qAsConst(docMap)) {
-        LookupContext context(d, docTable);
-        const ClassDocumentPtrPair cd = findClassRecursively(context, uiClass, 1u);
-        if (cd.first) {
-            cl = cd.first;
-            declDoc = cd.second;
+    for (const QString &candidate : uiClassNames(fwi->mainContainer()->objectName())) {
+        if (Designer::Constants::Internal::debug)
+            qDebug() << "Checking docs for " << candidate;
+
+        // Find the class definition (ui class defined as member or base class)
+        // in the file itself or in the directly included files (order 1).
+        for (const Document::Ptr &d : qAsConst(docMap)) {
+            LookupContext context(d, docTable);
+            const ClassDocumentPtrPair cd = findClassRecursively(context, candidate, 1u);
+            if (cd.first) {
+                cl = cd.first;
+                declDoc = cd.second;
+                break;
+            }
+        }
+        if (cl) {
+            uiClass = candidate;
             break;
         }
+
+        if (errorMessage->isEmpty())
+            *errorMessage = msgClassNotFound(candidate, docList);
     }
-    if (!cl) {
-        *errorMessage = msgClassNotFound(uiClass, docList);
+    if (!cl)
         return false;
-    }
 
     const QString functionName = "on_" + objectName + '_' + signalSignature;
     const QString functionNameWithParameterNames = addParameterNames(functionName, parameterNames);