diff --git a/core/adapters/dbgengadapter.cpp b/core/adapters/dbgengadapter.cpp
index a837761..0e97179 100644
--- a/core/adapters/dbgengadapter.cpp
+++ b/core/adapters/dbgengadapter.cpp
@@ -1301,9 +1301,13 @@ std::string DbgEngAdapter::InvokeBackendCommand(const std::string& command)
 {
 	if (m_debugControl)
 	{
+		m_outputCallbacks.StartOutput();
 		this->m_debugControl->Execute(DEBUG_OUTCTL_ALL_CLIENTS, command.c_str(), DEBUG_EXECUTE_NO_REPEAT);
 		m_debugClient->ExitDispatch(reinterpret_cast<PDEBUG_CLIENT>(m_debugClient));
-		// The output is handled by DbgEngOutputCallbacks::Output()
+		// The output is handled by DbgEngOutputCallbacks::Output(), and Execute() would not return until all output
+		// has been dumped, so we can get the full output here
+		auto ret = m_outputCallbacks.EndOutput();
+		return ret;
 	}
 	return "";
 }
@@ -1450,6 +1454,7 @@ HRESULT DbgEngOutputCallbacks::Output(unsigned long mask, const char* text)
 	event.type = BackendMessageEventType;
 	event.data.messageData.message = text;
 	m_adapter->PostDebuggerEvent(event);
+	m_output += text;
 	return S_OK;
 }
 
@@ -1463,6 +1468,16 @@ unsigned long DbgEngOutputCallbacks::Release()
 	return 0;
 }
 
+void DbgEngOutputCallbacks::StartOutput()
+{
+	m_output.clear();
+}
+
+std::string DbgEngOutputCallbacks::EndOutput()
+{
+	return m_output;
+}
+
 HRESULT DbgEngOutputCallbacks::QueryInterface(const IID& interface_id, void** _interface)
 {
 	return S_OK;
diff --git a/core/adapters/dbgengadapter.h b/core/adapters/dbgengadapter.h
index e5cd56b..c1c4c28 100644
--- a/core/adapters/dbgengadapter.h
+++ b/core/adapters/dbgengadapter.h
@@ -48,6 +48,7 @@ namespace BinaryNinjaDebugger {
 	{
 	private:
 		DebugAdapter* m_adapter;
+		std::string m_output;
 
 	public:
 		CALLBACK_METHOD(unsigned long) AddRef() override;
@@ -55,6 +56,8 @@ namespace BinaryNinjaDebugger {
 		CALLBACK_METHOD(HRESULT) QueryInterface(const IID& interface_id, void** _interface) override;
 		CALLBACK_METHOD(HRESULT) Output(unsigned long mask, const char* text);
 		void SetAdapter(DebugAdapter* adapter);
+		void StartOutput();
+		std::string EndOutput();
 	};
 
     class DbgEngInputCallbacks : public IDebugInputCallbacks
diff --git a/ui/debugadapterscriptingprovider.cpp b/ui/debugadapterscriptingprovider.cpp
index b6b90eb..9ea3844 100644
--- a/ui/debugadapterscriptingprovider.cpp
+++ b/ui/debugadapterscriptingprovider.cpp
@@ -112,7 +112,15 @@ BNScriptingProviderExecuteResult DebugAdapterScriptingInstance::ExecuteScriptInp
 		auto trimmedInput = input;
 		trimmedInput.erase(trimmedInput.find_last_not_of('\n') + 1);
 		auto ret = m_controller->InvokeBackendCommand(trimmedInput);
-		Output(ret);
+		// Do not output the returned string if it is DbgEng, since the output from DbgEng backend is already handled
+		// by the BackendMessageEventType event
+		if ((m_controller->GetAdapterType() != "DBGENG") && (m_controller->GetAdapterType() != "DBGENG_TTD")
+			&& (m_controller->GetAdapterType() != "LOCAL_WINDOWS_KERNEL")
+			&& (m_controller->GetAdapterType() != "WINDOWS_KERNEL")
+			&& (m_controller->GetAdapterType() != "WINDOWS_DUMP_FILE"))
+		{
+			Output(ret);
+		}
 		return SuccessfulScriptExecution;
 	}
 	return InvalidScriptInput;