diff --git a/src/plugins/debugger/cdb/cdbengine.cpp b/src/plugins/debugger/cdb/cdbengine.cpp
index 3abc78a5057..153f3ce85a7 100644
--- a/src/plugins/debugger/cdb/cdbengine.cpp
+++ b/src/plugins/debugger/cdb/cdbengine.cpp
@@ -156,16 +156,6 @@ namespace Internal {
 
 static const char localsPrefixC[] = "local.";
 
-// Base data structure for command queue entries with callback
-class CdbCommand
-{
-public:
-    CdbCommand() = default;
-    CdbCommand(CdbEngine::CommandHandler h) : handler(h) {}
-
-    CdbEngine::CommandHandler handler;
-};
-
 // Accessed by DebuggerRunTool
 DebuggerEngine *createCdbEngine()
 {
diff --git a/src/plugins/debugger/cdb/cdbengine.h b/src/plugins/debugger/cdb/cdbengine.h
index 8dd3739dea0..916e8a7db9c 100644
--- a/src/plugins/debugger/cdb/cdbengine.h
+++ b/src/plugins/debugger/cdb/cdbengine.h
@@ -39,14 +39,11 @@
 namespace Debugger {
 namespace Internal {
 
-class CdbCommand;
-
 class CdbEngine : public CppDebuggerEngine
 {
     Q_OBJECT
 
 public:
-    using CdbCommandPtr = QSharedPointer<CdbCommand>;
     using CommandHandler = std::function<void (const DebuggerResponse &)>;
 
     explicit CdbEngine();