diff --git a/aegisub/build/Aegisub/Aegisub.targets b/aegisub/build/Aegisub/Aegisub.targets
index 1345ab4ee..64d234a77 100644
--- a/aegisub/build/Aegisub/Aegisub.targets
+++ b/aegisub/build/Aegisub/Aegisub.targets
@@ -186,6 +186,7 @@
         $(AegisubContribBase)iconv\include;
         $(AegisubSourceBase)libaegisub\include;
         $(AegisubSourceBase)build;
+        $(AegisubSourceBase)include;
         %(AdditionalIncludeDirectories)
       </AdditionalIncludeDirectories>
     </ClCompile>
diff --git a/aegisub/build/fftw/fftw.vcxproj b/aegisub/build/fftw/fftw.vcxproj
index a2dbfa79f..bbb6261d5 100644
--- a/aegisub/build/fftw/fftw.vcxproj
+++ b/aegisub/build/fftw/fftw.vcxproj
@@ -60,6 +60,12 @@
       <OpenMPSupport>true</OpenMPSupport>
       <StructMemberAlignment>Default</StructMemberAlignment>
     </ClCompile>
+    <PostBuildEvent>
+      <Command>
+        md $(AegisubSourceBase)\include 2&gt; NUL
+        copy $(FftwSrcDir)\api\fftw3.h $(AegisubSourceBase)\include
+      </Command>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
 
   <!-- Source files -->