diff --git a/src/openvpnserv/openvpnserv.vcxproj b/src/openvpnserv/openvpnserv.vcxproj
index c5a34b87..f2eb805f 100644
--- a/src/openvpnserv/openvpnserv.vcxproj
+++ b/src/openvpnserv/openvpnserv.vcxproj
@@ -72,7 +72,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\openvpn;..\compat;$(OPENSSL_HOME)/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <ResourceCompile />
@@ -83,7 +83,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\openvpn;..\compat;$(OPENSSL_HOME)/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <ResourceCompile />
@@ -94,7 +94,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\openvpn;..\compat;$(OPENSSL_HOME)/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <ResourceCompile />
@@ -105,7 +105,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\openvpn;..\compat;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\openvpn;..\compat;$(OPENSSL_HOME)/include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <ResourceCompile />