diff --git a/common/waifu2x.cpp b/common/waifu2x.cpp
index d485cb7..fcbff96 100644
--- a/common/waifu2x.cpp
+++ b/common/waifu2x.cpp
@@ -471,7 +471,7 @@ Waifu2x::eWaifu2xcuDNNError Waifu2x::can_use_cuDNN()
 			cudnnGetVersionType cudnnGetVersionFunc = (cudnnGetVersionType)GetProcAddress(hModule, "cudnnGetVersion");
 			if (cudnnCreateFunc != nullptr && cudnnDestroyFunc != nullptr && cudnnGetVersionFunc != nullptr)
 			{
-				if (cudnnGetVersionFunc() >= 3000)
+				if (cudnnGetVersionFunc() >= CUDNN_REQUIRE_VERION)
 				{
 					cudnnHandle_t h;
 					if (cudnnCreateFunc(&h) == CUDNN_STATUS_SUCCESS)
diff --git a/common/waifu2x.h b/common/waifu2x.h
index 9647677..8b689d4 100644
--- a/common/waifu2x.h
+++ b/common/waifu2x.h
@@ -11,7 +11,8 @@
 #include <opencv2/core.hpp>
 
 #define CUDNN_DLL_NAME "cudnn64_7.dll"
-#define CUDNN_REQUIRE_VERION_TEXT "v7"
+#define CUDNN_REQUIRE_VERION_TEXT "v7.3"
+#define CUDNN_REQUIRE_VERION 7300
 
 
 namespace caffe