diff --git a/1.2/ArmnnDriverImpl.hpp b/1.2/ArmnnDriverImpl.hpp
index b3c6507..73ba133 100644
--- a/1.2/ArmnnDriverImpl.hpp
+++ b/1.2/ArmnnDriverImpl.hpp
@@ -11,6 +11,13 @@
 
 #include <armnn/ArmNN.hpp>
 
+#ifdef ARMNN_ANDROID_R
+using namespace android::nn::hal;
+#endif
+
+namespace V1_0 = ::android::hardware::neuralnetworks::V1_0;
+namespace V1_2 = ::android::hardware::neuralnetworks::V1_2;
+
 namespace armnn_driver
 {
 namespace hal_1_2
@@ -19,12 +26,12 @@
 class ArmnnDriverImpl
 {
 public:
-    static Return<ErrorStatus> prepareArmnnModel_1_2(const armnn::IRuntimePtr& runtime,
-                                                     const armnn::IGpuAccTunedParametersPtr& clTunedParameters,
-                                                     const DriverOptions& options,
-                                                     const V1_2::Model& model,
-                                                     const android::sp<V1_2::IPreparedModelCallback>& cb,
-                                                     bool float32ToFloat16 = false);
+    static Return<V1_0::ErrorStatus> prepareArmnnModel_1_2(const armnn::IRuntimePtr& runtime,
+                                                           const armnn::IGpuAccTunedParametersPtr& clTunedParameters,
+                                                           const DriverOptions& options,
+                                                           const V1_2::Model& model,
+                                                           const android::sp<V1_2::IPreparedModelCallback>& cb,
+                                                           bool float32ToFloat16 = false);
 
     static Return<void> getCapabilities_1_2(const armnn::IRuntimePtr& runtime,
                                             V1_2::IDevice::getCapabilities_1_2_cb cb);