diff --git a/src/plugins/projectexplorer/gcctoolchain.h b/src/plugins/projectexplorer/gcctoolchain.h
index bdb1fb03fd0..beb736be4d0 100644
--- a/src/plugins/projectexplorer/gcctoolchain.h
+++ b/src/plugins/projectexplorer/gcctoolchain.h
@@ -98,7 +98,7 @@ public:
     };
     GccToolChain *asGccToolChain() final { return this; }
 
-    bool matchesCompilerCommand(const Utils::FilePath &command) const;
+    bool matchesCompilerCommand(const Utils::FilePath &command) const override;
 
     void setPriority(int priority) { m_priority = priority; }