diff --git a/Source/Core/UICommon/UICommon.vcxproj b/Source/Core/UICommon/UICommon.vcxproj
index 210dafc17d..f0c141f623 100644
--- a/Source/Core/UICommon/UICommon.vcxproj
+++ b/Source/Core/UICommon/UICommon.vcxproj
@@ -37,7 +37,7 @@
   <PropertyGroup Label="UserMacros" />
   <ItemDefinitionGroup>
     <ClCompile>
-      <AdditionalIncludeDirectories>$(ExternalsDir)zlib;$(ExternalsDir)cpp-optparse;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(ExternalsDir)cpp-optparse;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>