diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index 6b1a53ab96d..b5494c9f024 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -3799,7 +3799,7 @@ static SourcePathMap mergeStartParametersSourcePathMap(const DebuggerRunParamete
     for (auto it = in.constBegin(), end = in.constEnd(); it != end; ++it) {
         // Entries that start with parenthesis are handled in CppDebuggerEngine::validateRunParameters
         if (!it.key().startsWith('('))
-            rc.insert(it.key(), it.value());
+            rc.insert(it.key(), sp.macroExpander->expand(it.value()));
     }
     return rc;
 }