diff --git a/src/plugins/projectexplorer/toolchain.cpp b/src/plugins/projectexplorer/toolchain.cpp
index 2a8ff0de051..678ad2bb8bb 100644
--- a/src/plugins/projectexplorer/toolchain.cpp
+++ b/src/plugins/projectexplorer/toolchain.cpp
@@ -124,7 +124,7 @@ QString ToolChain::id() const
     return d->m_id;
 }
 
-Utils::FileName ToolChain::suggestedDebugger()
+Utils::FileName ToolChain::suggestedDebugger() const
 {
     return ToolChainManager::instance()->defaultDebugger(targetAbi());
 }
diff --git a/src/plugins/projectexplorer/toolchain.h b/src/plugins/projectexplorer/toolchain.h
index 2f82c1ba8c5..8c4bb703a5a 100644
--- a/src/plugins/projectexplorer/toolchain.h
+++ b/src/plugins/projectexplorer/toolchain.h
@@ -73,7 +73,7 @@ public:
     QString id() const;
 
     virtual QList<Utils::FileName> suggestedMkspecList() const { return QList<Utils::FileName>(); }
-    virtual Utils::FileName suggestedDebugger();
+    virtual Utils::FileName suggestedDebugger() const;
 
     virtual QString type() const = 0;
     virtual QString typeDisplayName() const = 0;