diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index 267f99761a893..19e3a23dae2cc 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -3850,7 +3850,7 @@ public class ActivityManager {
         pw.println();
         dumpService(pw, fd, ProcessStats.SERVICE_NAME, new String[] { packageName });
         pw.println();
-        dumpService(pw, fd, "usagestats", new String[] { "--packages", packageName });
+        dumpService(pw, fd, "usagestats", new String[] { packageName });
         pw.println();
         dumpService(pw, fd, BatteryStats.SERVICE_NAME, new String[] { packageName });
         pw.flush();
diff --git a/services/usage/java/com/android/server/usage/UsageStatsService.java b/services/usage/java/com/android/server/usage/UsageStatsService.java
index 07c860b54413d..cdce44872cc0d 100644
--- a/services/usage/java/com/android/server/usage/UsageStatsService.java
+++ b/services/usage/java/com/android/server/usage/UsageStatsService.java
@@ -495,8 +495,8 @@ public class UsageStatsService extends SystemService implements
                         flushToDiskLocked();
                         pw.println("Flushed stats to disk");
                         return;
-                    } else {
-                        // Anything else is a pkg to filter
+                    } else if (arg != null && !arg.startsWith("-")) {
+                        // Anything else that doesn't start with '-' is a pkg to filter
                         pkg = arg;
                         break;
                     }