diff --git a/browser/installer/windows/nsis/installer.nsi b/browser/installer/windows/nsis/installer.nsi
index 3915450f16a..78a46383189 100755
--- a/browser/installer/windows/nsis/installer.nsi
+++ b/browser/installer/windows/nsis/installer.nsi
@@ -369,6 +369,8 @@ Section "-Application" APP_IDX
 
   StrCpy $0 "Software\Microsoft\MediaPlayer\ShimInclusionList\$R9"
   ${CreateRegKey} "$TmpVal" "$0" 0
+  StrCpy $0 "Software\Microsoft\MediaPlayer\ShimInclusionList\plugin-container.exe"
+  ${CreateRegKey} "$TmpVal" "$0" 0
 
   ${If} $TmpVal == "HKLM"
     ; Set the permitted LSP Categories for WinVista and above
diff --git a/browser/installer/windows/nsis/uninstaller.nsi b/browser/installer/windows/nsis/uninstaller.nsi
index be054e3b29f..14fd4cadf89 100755
--- a/browser/installer/windows/nsis/uninstaller.nsi
+++ b/browser/installer/windows/nsis/uninstaller.nsi
@@ -298,6 +298,9 @@ Section "Uninstall"
     StrCpy $0 "Software\Microsoft\MediaPlayer\ShimInclusionList\${FileMainEXE}"
     DeleteRegKey HKLM "$0"
     DeleteRegKey HKCU "$0"
+    StrCpy $0 "Software\Microsoft\MediaPlayer\ShimInclusionList\plugin-container.exe"
+    DeleteRegKey HKLM "$0"
+    DeleteRegKey HKCU "$0"
     StrCpy $0 "Software\Classes\MIME\Database\Content Type\application/x-xpinstall;app=firefox"
     DeleteRegKey HKLM "$0"
     DeleteRegKey HKCU "$0"