diff --git a/gdipp.vcxproj b/gdipp.vcxproj
index 3f27bd3..87b7915 100644
--- a/gdipp.vcxproj
+++ b/gdipp.vcxproj
@@ -327,7 +327,7 @@
       <FavorSizeOrSpeed>Neither</FavorSizeOrSpeed>
       <EnableFiberSafeOptimizations>false</EnableFiberSafeOptimizations>
       <WholeProgramOptimization>false</WholeProgramOptimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;EASYHOOK;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
@@ -385,7 +385,7 @@
       <FavorSizeOrSpeed>Neither</FavorSizeOrSpeed>
       <EnableFiberSafeOptimizations>false</EnableFiberSafeOptimizations>
       <WholeProgramOptimization>false</WholeProgramOptimization>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;EASYHOOK;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
@@ -517,7 +517,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <EnableFiberSafeOptimizations>false</EnableFiberSafeOptimizations>
-      <PreprocessorDefinitions>STATIC_LIB;EASYHOOK_STATIC;WIN32;NDEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>STATIC_LIB;EASYHOOK;WIN32;NDEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>Sync</ExceptionHandling>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>
@@ -699,7 +699,7 @@
       <Optimization>MaxSpeed</Optimization>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
-      <PreprocessorDefinitions>STATIC_LIB;NDEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>STATIC_LIB;EASYHOOK;NDEBUG;_WINDOWS;_USRDLL;GDIPP_EXPORTS;_GDIPP_DLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ExceptionHandling>Sync</ExceptionHandling>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <BufferSecurityCheck>false</BufferSecurityCheck>