diff --git a/support/windows/Servo.wxs.mako b/support/windows/Servo.wxs.mako
index dc91d197196..aa4705ff578 100644
--- a/support/windows/Servo.wxs.mako
+++ b/support/windows/Servo.wxs.mako
@@ -133,19 +133,19 @@
                     Name="avutil-55.dll"
                     Source="C:\msys64\mingw64\bin\avutil-55.dll"
                     DiskId="1"/>
-              <File Id="LibRTMP"
+              <File Id="LibRTMPDll"
                     Name="librtmp-1.dll"
                     Source="C:\msys64\mingw64\bin\librtmp-1.dll"
                     DiskId="1"/>
-              <File Id="LibBluRay"
+              <File Id="LibBluRayDll"
                     Name="libbluray-1.dll"
                     Source="C:\msys64\mingw64\bin\libbluray-1.dll"
                     DiskId="1"/>
-              <File Id="LibModPlug"
+              <File Id="LibModPlugDll"
                     Name="libmodplug-1.dll"
                     Source="c:\msys64\mingw64\bin\libmodplug-1.dll"
                     DiskId="1"/>
-              <File Id="LibCelt"
+              <File Id="LibCeltDll"
                     Name="libcelt0-2.dll"
                     Source="C:\msys64\mingw64\bin\libcelt0-2.dll"
                     DiskId="1"/>