diff --git a/radio/aidl/vts/radio_modem_response.cpp b/radio/aidl/vts/radio_modem_response.cpp
index d2715a8198..20b44c5831 100644
--- a/radio/aidl/vts/radio_modem_response.cpp
+++ b/radio/aidl/vts/radio_modem_response.cpp
@@ -24,6 +24,7 @@ ndk::ScopedAStatus RadioModemResponse::acknowledgeRequest(int32_t /*serial*/) {
 
 ndk::ScopedAStatus RadioModemResponse::enableModemResponse(const RadioResponseInfo& info) {
     rspInfo = info;
+    enableModemResponseToggle = !enableModemResponseToggle;
     parent_modem.notify(info.serial);
     return ndk::ScopedAStatus::ok();
 }
diff --git a/radio/aidl/vts/radio_modem_utils.h b/radio/aidl/vts/radio_modem_utils.h
index 8779e0cbd2..49e1891212 100644
--- a/radio/aidl/vts/radio_modem_utils.h
+++ b/radio/aidl/vts/radio_modem_utils.h
@@ -37,7 +37,7 @@ class RadioModemResponse : public BnRadioModemResponse {
 
     RadioResponseInfo rspInfo;
     bool isModemEnabled;
-    bool enableModemResponseToggle;
+    bool enableModemResponseToggle = false;
 
     virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;