diff --git a/src/plugins/projectexplorer/gcctoolchain.cpp b/src/plugins/projectexplorer/gcctoolchain.cpp
index 4eba54e08e5..e9d6490b3bc 100644
--- a/src/plugins/projectexplorer/gcctoolchain.cpp
+++ b/src/plugins/projectexplorer/gcctoolchain.cpp
@@ -1449,9 +1449,6 @@ QList<ToolChain *> ClangToolChainFactory::autoDetect(const QList<ToolChain *> &a
     if (!compilerPath.isEmpty()) {
         const FileName clang = compilerPath.parentDir().appendPath(
                     HostOsInfo::withExecutableSuffix("clang"));
-        tcs.append(autoDetectToolchains(clang,
-                                        hostAbi, Constants::CXX_LANGUAGE_ID,
-                                        Constants::CLANG_TOOLCHAIN_TYPEID, alreadyKnown));
         tcs.append(autoDetectToolchains(clang,
                                         hostAbi, Constants::C_LANGUAGE_ID,
                                         Constants::CLANG_TOOLCHAIN_TYPEID, alreadyKnown));