diff --git a/api/system-current.txt b/api/system-current.txt
index c9176ecf03c37..44ce1b7d9089c 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -9927,11 +9927,11 @@ package android.content.pm {
   public static class PackageInstaller.SessionParams implements android.os.Parcelable {
     ctor public PackageInstaller.SessionParams(int);
     method public int describeContents();
+    method public void setAllowDowngrade(boolean);
     method public void setAppIcon(android.graphics.Bitmap);
     method public void setAppLabel(java.lang.CharSequence);
     method public void setAppPackageName(java.lang.String);
     method public void setGrantedRuntimePermissions(java.lang.String[]);
-    method public void setInstallFlagsDowngrade();
     method public void setInstallLocation(int);
     method public void setOriginatingUid(int);
     method public void setOriginatingUri(android.net.Uri);
diff --git a/core/java/android/content/pm/PackageInstaller.java b/core/java/android/content/pm/PackageInstaller.java
index 0f5ec919710e3..6f2786a1f2aa1 100644
--- a/core/java/android/content/pm/PackageInstaller.java
+++ b/core/java/android/content/pm/PackageInstaller.java
@@ -1054,8 +1054,12 @@ public class PackageInstaller {
 
         /** {@hide} */
         @SystemApi
-        public void setInstallFlagsDowngrade() {
-            installFlags |= PackageManager.INSTALL_ALLOW_DOWNGRADE;
+        public void setAllowDowngrade(boolean allowDowngrade) {
+            if (allowDowngrade) {
+                installFlags |= PackageManager.INSTALL_ALLOW_DOWNGRADE;
+            } else {
+                installFlags &= ~PackageManager.INSTALL_ALLOW_DOWNGRADE;
+            }
         }
 
         /** {@hide} */