diff --git a/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp b/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp
index cdcb78742e4..4fa51c94b7c 100644
--- a/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp
+++ b/src/plugins/clangcodemodel/test/clangcodecompletion_test.cpp
@@ -35,10 +35,12 @@
 #include <coreplugin/editormanager/editormanager.h>
 #include <coreplugin/editormanager/ieditor.h>
 #include <coreplugin/icore.h>
+#include <cppeditor/cppcodemodelsettings.h>
 #include <cppeditor/cpptoolsreuse.h>
 #include <cppeditor/cpptoolstestcase.h>
 #include <cppeditor/modelmanagertesthelper.h>
 #include <cppeditor/projectinfo.h>
+#include <languageclient/languageclientmanager.h>
 #include <texteditor/codeassist/assistproposalitem.h>
 #include <texteditor/codeassist/genericproposalmodel.h>
 #include <texteditor/textdocument.h>
@@ -514,6 +516,13 @@ namespace ClangCodeModel {
 namespace Internal {
 namespace Tests {
 
+void ClangCodeCompletionTest::initTestCase()
+{
+    CppEditor::ClangdSettings::setUseClangd(false);
+    for (LanguageClient::Client * const c : LanguageClient::LanguageClientManager::clients())
+        LanguageClient::LanguageClientManager::shutdownClient(c);
+}
+
 void ClangCodeCompletionTest::testCompleteDoxygenKeywords()
 {
     ProjectLessCompletionTest t("doxygenKeywordsCompletion.cpp");
diff --git a/src/plugins/clangcodemodel/test/clangcodecompletion_test.h b/src/plugins/clangcodemodel/test/clangcodecompletion_test.h
index cf8bac668e5..ad2dd83ada2 100644
--- a/src/plugins/clangcodemodel/test/clangcodecompletion_test.h
+++ b/src/plugins/clangcodemodel/test/clangcodecompletion_test.h
@@ -38,6 +38,8 @@ class ClangCodeCompletionTest : public QObject
     Q_OBJECT
 
 private slots:
+    void initTestCase();
+
     void testCompleteDoxygenKeywords();
     void testCompletePreprocessorKeywords();
     void testCompleteIncludeDirective();