diff --git a/src/plugins/projectexplorer/gcctoolchain.cpp b/src/plugins/projectexplorer/gcctoolchain.cpp
index fcff4513949..a0183471e3d 100644
--- a/src/plugins/projectexplorer/gcctoolchain.cpp
+++ b/src/plugins/projectexplorer/gcctoolchain.cpp
@@ -362,6 +362,7 @@ void GccToolChain::setDebuggerCommand(const QString &d)
     if (m_debuggerCommand == d)
         return;
     m_debuggerCommand = d;
+    updateId();
     toolChainUpdated();
 }