diff --git a/libsodium.vcxproj b/libsodium.vcxproj
index e4e69077..1883e8ae 100644
--- a/libsodium.vcxproj
+++ b/libsodium.vcxproj
@@ -181,6 +181,7 @@
       <PreprocessorDefinitions>SODIUM_STATIC;SODIUM_EXPORT=;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <DisableSpecificWarnings>4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(SolutionDir);$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\quirks\windows;$(SolutionDir)src\libsodium\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -196,6 +197,7 @@
       <PreprocessorDefinitions>SODIUM_EXPORT=__declspec(dllexport);DLL_EXPORT;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <DisableSpecificWarnings>4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
       <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
+      <AdditionalIncludeDirectories>$(SolutionDir);$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\quirks\windows;$(SolutionDir)src\libsodium\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -244,6 +246,7 @@
       <DisableSpecificWarnings>4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
+      <AdditionalIncludeDirectories>$(SolutionDir);$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\quirks\windows;$(SolutionDir)src\libsodium\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -264,6 +267,7 @@
       <DisableSpecificWarnings>4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
       <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
+      <AdditionalIncludeDirectories>$(SolutionDir);$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\include\sodium;$(SolutionDir)src\libsodium\quirks\windows;$(SolutionDir)src\libsodium\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>