diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 5f9a363dc7287..9886a07c0a497 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -8781,8 +8781,16 @@ public class PackageManagerService extends IPackageManager.Stub
 
         if (scanSystemPartition && isSystemPkgUpdated && !isSystemPkgBetter) {
             // The version of the application on the /system partition is less than or
-            // equal to the version on the /data partition. Throw an exception and use
-            // the application already installed on the /data partition.
+            // equal to the version on the /data partition. Even though the disabled system package
+            // is likely to be replaced by a version on the /data partition, we make assumptions
+            // that it's part of the mPackages collection during package manager initialization. So,
+            // add it to mPackages if there isn't already a package in the collection and then throw
+            // an exception to use the application already installed on the /data partition.
+            synchronized (mPackages) {
+                if (!mPackages.containsKey(pkg.packageName)) {
+                    mPackages.put(pkg.packageName, pkg);
+                }
+            }
             throw new PackageManagerException(Log.WARN, "Package " + pkg.packageName + " at "
                     + pkg.codePath + " ignored: updated version " + pkgSetting.versionCode
                     + " better than this " + pkg.getLongVersionCode());