diff --git a/src/plugins/clangcodemodel/test/clangdtests.cpp b/src/plugins/clangcodemodel/test/clangdtests.cpp
index cdd017a49b3..5f963b3fa0e 100644
--- a/src/plugins/clangcodemodel/test/clangdtests.cpp
+++ b/src/plugins/clangcodemodel/test/clangdtests.cpp
@@ -1431,7 +1431,8 @@ ClangdTestCompletion::ClangdTestCompletion()
                         "membercompletion-inside.cpp", "membercompletion-outside.cpp",
                         "noDotToArrowCorrectionForFloats.cpp",
                         "preprocessorKeywordsCompletion.cpp", "preprocessorKeywordsCompletion2.cpp",
-                        "preprocessorKeywordsCompletion3.cpp", "signalCompletion.cpp"});
+                        "preprocessorKeywordsCompletion3.cpp", "privateFuncDefCompletion.cpp",
+                        "signalCompletion.cpp"});
 }
 
 void ClangdTestCompletion::initTestCase()
@@ -1664,6 +1665,18 @@ void ClangdTestCompletion::testCompleteClassAndConstructor()
     QCOMPARE(manipulator.skipPos(), -1);
 }
 
+void ClangdTestCompletion::testCompletePrivateFunctionDefinition()
+{
+    ProposalModelPtr proposal;
+    getProposal("privateFuncDefCompletion.cpp", proposal);
+
+    QVERIFY(proposal);
+    QEXPECT_FAIL("", "FIXME: clangd needs to differentiate "
+                     "between function call and function definiton", Abort);
+    QCOMPARE(proposal->size(), 1);
+    QVERIFY(hasItem(proposal, " theFunc()"));
+}
+
 void ClangdTestCompletion::testCompleteWithDotToArrowCorrection()
 {
     ProposalModelPtr proposal;
diff --git a/src/plugins/clangcodemodel/test/clangdtests.h b/src/plugins/clangcodemodel/test/clangdtests.h
index b73f863752e..b6399a9c59f 100644
--- a/src/plugins/clangcodemodel/test/clangdtests.h
+++ b/src/plugins/clangcodemodel/test/clangdtests.h
@@ -169,6 +169,7 @@ private slots:
     void testFunctionHintsFiltered();
     void testFunctionHintConstructor();
     void testCompleteClassAndConstructor();
+    void testCompletePrivateFunctionDefinition();
 
     void testCompleteWithDotToArrowCorrection();
     void testDontCompleteWithDotToArrowCorrectionForFloats();
diff --git a/src/plugins/clangcodemodel/test/data/clangtestdata.qrc b/src/plugins/clangcodemodel/test/data/clangtestdata.qrc
index 26b73373fcb..b006e3832ff 100644
--- a/src/plugins/clangcodemodel/test/data/clangtestdata.qrc
+++ b/src/plugins/clangcodemodel/test/data/clangtestdata.qrc
@@ -53,5 +53,6 @@
         <file>completion/functionAddress.cpp</file>
         <file>completion/preprocessorKeywordsCompletion2.cpp</file>
         <file>completion/preprocessorKeywordsCompletion3.cpp</file>
+        <file>completion/privateFuncDefCompletion.cpp</file>
     </qresource>
 </RCC>
diff --git a/src/plugins/clangcodemodel/test/data/completion/completion.pro b/src/plugins/clangcodemodel/test/data/completion/completion.pro
index 03eff0bd309..da641f22378 100644
--- a/src/plugins/clangcodemodel/test/data/completion/completion.pro
+++ b/src/plugins/clangcodemodel/test/data/completion/completion.pro
@@ -24,6 +24,7 @@ SOURCES = \
     preprocessorKeywordsCompletion.cpp \
     preprocessorKeywordsCompletion2.cpp \
     preprocessorKeywordsCompletion3.cpp \
+    privateFuncDefCompletion.cpp \
     signalCompletion.cpp
 
 HEADERS = mainwindow.h
diff --git a/src/plugins/clangcodemodel/test/data/completion/privateFuncDefCompletion.cpp b/src/plugins/clangcodemodel/test/data/completion/privateFuncDefCompletion.cpp
new file mode 100644
index 00000000000..bbe7e1b49a4
--- /dev/null
+++ b/src/plugins/clangcodemodel/test/data/completion/privateFuncDefCompletion.cpp
@@ -0,0 +1,5 @@
+class MyClass {
+    void theFunc();
+};
+
+void MyClass::the /* COMPLETE HERE */