diff --git a/toolkit/mozapps/installer/windows/nsis/common.nsh b/toolkit/mozapps/installer/windows/nsis/common.nsh
index 49352e307be4..6ec8db8a0d35 100755
--- a/toolkit/mozapps/installer/windows/nsis/common.nsh
+++ b/toolkit/mozapps/installer/windows/nsis/common.nsh
@@ -4861,6 +4861,11 @@
               StrCpy $AddStartMenuSC "1"
             ${EndIf}
 
+            ReadINIStr $R8 $R7 "Install" "MaintenanceService"
+            ${If} $R8 == "false"
+              StrCpy $InstallMaintenanceService "0"
+            ${EndIf}
+
             !ifndef NO_STARTMENU_DIR
               ReadINIStr $R8 $R7 "Install" "StartMenuDirectoryName"
               ${If} $R8 != ""