diff --git a/polymer/eduke32/rsrc/32/manifest.build.xml b/polymer/eduke32/rsrc/32/manifest.build.xml
index ecd50f5fb..e28c22d8e 100644
--- a/polymer/eduke32/rsrc/32/manifest.build.xml
+++ b/polymer/eduke32/rsrc/32/manifest.build.xml
@@ -1,27 +1,39 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
-<asmv3:application>
+  <asmv3:application>
     <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
       <dpiAware>true</dpiAware>
     </asmv3:windowsSettings>
-</asmv3:application>
-<assemblyIdentity
-    version="1.0.0.0"
-    processorArchitecture="X86"
-    name="EDuke32.Mapster32"
-    type="win32"
+  </asmv3:application>
+  <assemblyIdentity
+      version="1.0.0.0"
+      processorArchitecture="X86"
+      name="EDuke32.Mapster32"
+      type="win32"
 />
-<description>Mapster32 for EDuke32</description>
-<dependency>
+  <description>Mapster32 for EDuke32</description>
+  <dependency>
     <dependentAssembly>
-        <assemblyIdentity
-            type="win32"
-            name="Microsoft.Windows.Common-Controls"
-            version="6.0.0.0"
-            processorArchitecture="X86"
-            publicKeyToken="6595b64144ccf1df"
-            language="*"
+      <assemblyIdentity
+          type="win32"
+          name="Microsoft.Windows.Common-Controls"
+          version="6.0.0.0"
+          processorArchitecture="X86"
+          publicKeyToken="6595b64144ccf1df"
+          language="*"
         />
     </dependentAssembly>
-</dependency>
+  </dependency>
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows Vista -->
+      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
+      <!-- Windows 7 -->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+      <!-- Windows 8 -->
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+      <!-- Windows 8.1 -->
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+    </application>
+  </compatibility>
 </assembly>
diff --git a/polymer/eduke32/rsrc/32/manifest.game.xml b/polymer/eduke32/rsrc/32/manifest.game.xml
index 5710254b6..cc4651e14 100644
--- a/polymer/eduke32/rsrc/32/manifest.game.xml
+++ b/polymer/eduke32/rsrc/32/manifest.game.xml
@@ -1,27 +1,39 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
-<asmv3:application>
+  <asmv3:application>
     <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
       <dpiAware>true</dpiAware>
     </asmv3:windowsSettings>
-</asmv3:application>
-<assemblyIdentity
-    version="1.0.0.0"
-    processorArchitecture="X86"
-    name="EDuke32"
-    type="win32"
+  </asmv3:application>
+  <assemblyIdentity
+      version="1.0.0.0"
+      processorArchitecture="X86"
+      name="EDuke32"
+      type="win32"
 />
-<description>EDuke32</description>
-<dependency>
+  <description>EDuke32</description>
+  <dependency>
     <dependentAssembly>
-        <assemblyIdentity
-            type="win32"
-            name="Microsoft.Windows.Common-Controls"
-            version="6.0.0.0"
-            processorArchitecture="X86"
-            publicKeyToken="6595b64144ccf1df"
-            language="*"
+      <assemblyIdentity
+          type="win32"
+          name="Microsoft.Windows.Common-Controls"
+          version="6.0.0.0"
+          processorArchitecture="X86"
+          publicKeyToken="6595b64144ccf1df"
+          language="*"
         />
     </dependentAssembly>
-</dependency>
+  </dependency>
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows Vista -->
+      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
+      <!-- Windows 7 -->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+      <!-- Windows 8 -->
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+      <!-- Windows 8.1 -->
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+    </application>
+  </compatibility>
 </assembly>
diff --git a/polymer/eduke32/rsrc/64/manifest.build.xml b/polymer/eduke32/rsrc/64/manifest.build.xml
index efbb60686..6f89ffc33 100644
--- a/polymer/eduke32/rsrc/64/manifest.build.xml
+++ b/polymer/eduke32/rsrc/64/manifest.build.xml
@@ -1,27 +1,39 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
-<asmv3:application>
+  <asmv3:application>
     <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
       <dpiAware>true</dpiAware>
     </asmv3:windowsSettings>
-</asmv3:application>
-<assemblyIdentity
-    version="1.0.0.0"
-    processorArchitecture="amd64"
-    name="EDuke32.Mapster32"
-    type="win32"
+  </asmv3:application>
+  <assemblyIdentity
+      version="1.0.0.0"
+      processorArchitecture="amd64"
+      name="EDuke32.Mapster32"
+      type="win32"
 />
-<description>Mapster32 for EDuke32</description>
-<dependency>
+  <description>Mapster32 for EDuke32</description>
+  <dependency>
     <dependentAssembly>
-        <assemblyIdentity
-            type="win32"
-            name="Microsoft.Windows.Common-Controls"
-            version="6.0.0.0"
-            processorArchitecture="amd64"
-            publicKeyToken="6595b64144ccf1df"
-            language="*"
+      <assemblyIdentity
+          type="win32"
+          name="Microsoft.Windows.Common-Controls"
+          version="6.0.0.0"
+          processorArchitecture="amd64"
+          publicKeyToken="6595b64144ccf1df"
+          language="*"
         />
     </dependentAssembly>
-</dependency>
+  </dependency>
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows Vista -->
+      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
+      <!-- Windows 7 -->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+      <!-- Windows 8 -->
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+      <!-- Windows 8.1 -->
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+    </application>
+  </compatibility>
 </assembly>
diff --git a/polymer/eduke32/rsrc/64/manifest.game.xml b/polymer/eduke32/rsrc/64/manifest.game.xml
index ea42786b8..5a2181bc7 100644
--- a/polymer/eduke32/rsrc/64/manifest.game.xml
+++ b/polymer/eduke32/rsrc/64/manifest.game.xml
@@ -1,27 +1,39 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3">
-<asmv3:application>
+  <asmv3:application>
     <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
       <dpiAware>true</dpiAware>
     </asmv3:windowsSettings>
-</asmv3:application>
-<assemblyIdentity
-    version="1.0.0.0"
-    processorArchitecture="amd64"
-    name="EDuke32"
-    type="win32"
+  </asmv3:application>
+  <assemblyIdentity
+      version="1.0.0.0"
+      processorArchitecture="amd64"
+      name="EDuke32"
+      type="win32"
 />
-<description>EDuke32</description>
-<dependency>
+  <description>EDuke32</description>
+  <dependency>
     <dependentAssembly>
-        <assemblyIdentity
-            type="win32"
-            name="Microsoft.Windows.Common-Controls"
-            version="6.0.0.0"
-            processorArchitecture="amd64"
-            publicKeyToken="6595b64144ccf1df"
-            language="*"
+      <assemblyIdentity
+          type="win32"
+          name="Microsoft.Windows.Common-Controls"
+          version="6.0.0.0"
+          processorArchitecture="amd64"
+          publicKeyToken="6595b64144ccf1df"
+          language="*"
         />
     </dependentAssembly>
-</dependency>
+  </dependency>
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- Windows Vista -->
+      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
+      <!-- Windows 7 -->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
+      <!-- Windows 8 -->
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
+      <!-- Windows 8.1 -->
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
+    </application>
+  </compatibility>
 </assembly>