diff --git a/Source/Core/Core/Core.vcproj b/Source/Core/Core/Core.vcproj
index 7251cea34b..1ab0e76fc8 100644
--- a/Source/Core/Core/Core.vcproj
+++ b/Source/Core/Core/Core.vcproj
@@ -44,7 +44,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm"
+				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm;..\..\..\Externals\zlib"
 				PreprocessorDefinitions="WIN32;_DEBUG;_LIB;LOGGING;_CRT_SECURE_NO_DEPRECATE;_SECURE_SCL=0"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
@@ -114,7 +114,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm"
+				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm;..\..\..\Externals\zlib"
 				PreprocessorDefinitions="WIN32;_DEBUG;_LIB;LOGGING;_CRT_SECURE_NO_DEPRECATE;_SECURE_SCL=0"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"
@@ -188,7 +188,7 @@
 				FavorSizeOrSpeed="1"
 				OmitFramePointers="true"
 				EnableFiberSafeOptimizations="false"
-				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm"
+				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm;..\..\..\Externals\zlib"
 				PreprocessorDefinitions="WIN32;NDEBUG;_LIB;_CRT_SECURE_NO_DEPRECATE;_SECURE_SCL=0"
 				StringPooling="true"
 				RuntimeLibrary="0"
@@ -338,7 +338,7 @@
 				FavorSizeOrSpeed="1"
 				OmitFramePointers="true"
 				EnableFiberSafeOptimizations="false"
-				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm"
+				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm;..\..\..\Externals\zlib"
 				PreprocessorDefinitions="NDEBUG;_LIB;LOGGING;DEBUGFAST;_CRT_SECURE_NO_DEPRECATE;_SECURE_SCL=0"
 				RuntimeLibrary="0"
 				BufferSecurityCheck="false"
@@ -412,7 +412,7 @@
 				FavorSizeOrSpeed="1"
 				OmitFramePointers="true"
 				EnableFiberSafeOptimizations="false"
-				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm"
+				AdditionalIncludeDirectories="..\Common\Src;..\DiscIO\Src;..\..\PluginSpecs;..\Debugger\Src;..\..\..\Externals\Bochs_disasm;..\..\..\Externals\zlib"
 				PreprocessorDefinitions="NDEBUG;_LIB;LOGGING;DEBUGFAST;_CRT_SECURE_NO_DEPRECATE;_SECURE_SCL=0"
 				RuntimeLibrary="0"
 				BufferSecurityCheck="false"