diff --git a/src/shim.cpp b/src/shim.cpp
index e133b46..6065afa 100644
--- a/src/shim.cpp
+++ b/src/shim.cpp
@@ -15,18 +15,10 @@ void *native_handle_create;
 void *native_handle_delete;
 void *native_handle_close;
 
-void logError() {
-    ALOGD("_ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE called");
-}
-
-void createEventFlag() {
-    ALOGD("_ZN7android8hardware9EventFlag15createEventFlagEPNSt6__ndk16atomicIjEEPPS1_ called");
-}
-
 // libfmq
 void *_ZN7android8hardware7details5checkEbPKc;
-void *_ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE = (void *) (logError); // ndk
-void *_ZN7android8hardware9EventFlag15createEventFlagEPNSt6__ndk16atomicIjEEPPS1_ = (void *) (createEventFlag); // ndk
+void *_ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE; // ndk
+void *_ZN7android8hardware9EventFlag15createEventFlagEPNSt6__ndk16atomicIjEEPPS1_; // ndk
 void *_ZN7android8hardware9EventFlag15deleteEventFlagEPPS1_;
 
 static void init_libcutils() {
@@ -90,18 +82,18 @@ static void init_libfmq() {
     }
 
     // ndk variant, real symbol: _ZN7android8hardware7details8logErrorERKNSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE
-//    _ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE = dlsym(libfmq, "_ZN7android8hardware7details8logErrorERKNSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE");
-//    if (_ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE == nullptr) {
-//        ALOGE("Failed to load symbol _ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE from libfmq.so");
-//        goto exit;
-//    }
+    _ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE = dlsym(libfmq, "_ZN7android8hardware7details8logErrorERKNSt3__112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE");
+    if (_ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE == nullptr) {
+        ALOGE("Failed to load symbol _ZN7android8hardware7details8logErrorERKNSt6__ndk112basic_stringIcNS2_11char_traitsIcEENS2_9allocatorIcEEEE from libfmq.so");
+        goto exit;
+    }
 
     // ndk variant, real symbol: _ZN7android8hardware9EventFlag15createEventFlagEPNSt3__16atomicIjEEPPS1_
-//    _ZN7android8hardware9EventFlag15createEventFlagEPNSt6__ndk16atomicIjEEPPS1_ = dlsym(libfmq, "_ZN7android8hardware9EventFlag15createEventFlagEPNSt3__16atomicIjEEPPS1_");
-//    if (_ZN7android8hardware9EventFlag15createEventFlagEPNSt6__ndk16atomicIjEEPPS1_ == nullptr) {
-//        ALOGE("Failed to load symbol _ZN7android8hardware9EventFlag15createEventFlagEPNSt3__16atomicIjEEPPS1_ from libfmq.so");
-//        goto exit;
-//    }
+    _ZN7android8hardware9EventFlag15createEventFlagEPNSt6__ndk16atomicIjEEPPS1_ = dlsym(libfmq, "_ZN7android8hardware9EventFlag15createEventFlagEPNSt3__16atomicIjEEPPS1_");
+    if (_ZN7android8hardware9EventFlag15createEventFlagEPNSt6__ndk16atomicIjEEPPS1_ == nullptr) {
+        ALOGE("Failed to load symbol _ZN7android8hardware9EventFlag15createEventFlagEPNSt3__16atomicIjEEPPS1_ from libfmq.so");
+        goto exit;
+    }
 
     _ZN7android8hardware9EventFlag15deleteEventFlagEPPS1_ = dlsym(libfmq, "_ZN7android8hardware9EventFlag15deleteEventFlagEPPS1_");
     if (_ZN7android8hardware9EventFlag15deleteEventFlagEPPS1_ == nullptr) {
diff --git a/src/viper_aidl.h b/src/viper_aidl.h
index 2146012..c4874c8 100644
--- a/src/viper_aidl.h
+++ b/src/viper_aidl.h
@@ -7,31 +7,31 @@
 #include <fmq/AidlMessageQueue.h>
 #include "aidl/EffectThread.h"
 
+using aidl::android::hardware::common::fmq::SynchronizedReadWrite;
 using aidl::android::hardware::audio::effect::BnEffect;
+using aidl::android::hardware::audio::effect::CommandId;
+using aidl::android::hardware::audio::effect::Descriptor;
 using aidl::android::hardware::audio::effect::EffectThread;
+using aidl::android::hardware::audio::effect::Parameter;
 using aidl::android::hardware::audio::effect::State;
 
 class ViPER4AndroidAIDL : public BnEffect, public EffectThread {
 public:
     // BnEffect
-    ::ndk::ScopedAStatus open(const ::aidl::android::hardware::audio::effect::Parameter::Common &common, const std::optional< ::aidl::android::hardware::audio::effect::Parameter::Specific> &specific, ::aidl::android::hardware::audio::effect::IEffect::OpenEffectReturn *ret) override;
-    ::ndk::ScopedAStatus close() override;
-    ::ndk::ScopedAStatus getDescriptor(::aidl::android::hardware::audio::effect::Descriptor *_aidl_return) override;
-    ::ndk::ScopedAStatus command(::aidl::android::hardware::audio::effect::CommandId id) override;
-    ::ndk::ScopedAStatus getState(::aidl::android::hardware::audio::effect::State *_aidl_return) override;
-    ::ndk::ScopedAStatus setParameter(const ::aidl::android::hardware::audio::effect::Parameter &in_param) override;
-    ::ndk::ScopedAStatus getParameter(const ::aidl::android::hardware::audio::effect::Parameter::Id &in_paramId, ::aidl::android::hardware::audio::effect::Parameter *_aidl_return) override;
-    ::ndk::ScopedAStatus reopen(::aidl::android::hardware::audio::effect::IEffect::OpenEffectReturn *_aidl_return) override;
+    ndk::ScopedAStatus open(const Parameter::Common &common, const std::optional<Parameter::Specific> &specific, IEffect::OpenEffectReturn *ret) override;
+    ndk::ScopedAStatus close() override;
+    ndk::ScopedAStatus getDescriptor(Descriptor *_aidl_return) override;
+    ndk::ScopedAStatus command(CommandId id) override;
+    ndk::ScopedAStatus getState(State *_aidl_return) override;
+    ndk::ScopedAStatus setParameter(const Parameter &in_param) override;
+    ndk::ScopedAStatus getParameter(const Parameter::Id &in_paramId, Parameter *_aidl_return) override;
+    ndk::ScopedAStatus reopen(IEffect::OpenEffectReturn *_aidl_return) override;
 
     // EffectThread
     void process() override;
 private:
-    typedef ::android::AidlMessageQueue<
-            IEffect::Status, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>
-            StatusMQ;
-    typedef ::android::AidlMessageQueue<
-            float, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>
-            DataMQ;
+    typedef android::AidlMessageQueue<IEffect::Status, SynchronizedReadWrite> StatusMQ;
+    typedef android::AidlMessageQueue<float, SynchronizedReadWrite> DataMQ;
 
     std::mutex mImplMutex;
     State mState = State::INIT;