diff --git a/src/plugins/cpptools/compileroptionsbuilder.cpp b/src/plugins/cpptools/compileroptionsbuilder.cpp
index e1b0f75b7a7..d0c553c1eba 100644
--- a/src/plugins/cpptools/compileroptionsbuilder.cpp
+++ b/src/plugins/cpptools/compileroptionsbuilder.cpp
@@ -626,4 +626,9 @@ UseToolchainMacros CompilerOptionsBuilder::useToolChainMacros()
                                                                           : UseToolchainMacros::No;
 }
 
+void CompilerOptionsBuilder::reset()
+{
+    m_options.clear();
+}
+
 } // namespace CppTools
diff --git a/src/plugins/cpptools/compileroptionsbuilder.h b/src/plugins/cpptools/compileroptionsbuilder.h
index b56bdf9c660..41b44bec2d0 100644
--- a/src/plugins/cpptools/compileroptionsbuilder.h
+++ b/src/plugins/cpptools/compileroptionsbuilder.h
@@ -78,6 +78,7 @@ public:
     virtual void addExtraOptions() {}
 
     static UseToolchainMacros useToolChainMacros();
+    void reset();
 
 private:
     bool excludeDefineDirective(const ProjectExplorer::Macro &macro) const;