diff --git a/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/StreamConfiguration.java b/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/StreamConfiguration.java
index b48331cfe..1f3301e1c 100644
--- a/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/StreamConfiguration.java
+++ b/apps/OboeTester/app/src/main/java/com/mobileer/oboetester/StreamConfiguration.java
@@ -74,25 +74,25 @@ public class StreamConfiguration {
     public static final int INPUT_PRESET_UNPROCESSED = 9; // must match Oboe
     public static final int INPUT_PRESET_VOICE_PERFORMANCE = 10; // must match Oboe
 
-    public static final int ERROR_BASE = -900;
-    public static final int ERROR_DISCONNECTED = -899;
-    public static final int ERROR_ILLEGAL_ARGUMENT = -898;
-    public static final int ERROR_INTERNAL = -896;
-    public static final int ERROR_INVALID_STATE = -895;
-    public static final int ERROR_INVALID_HANDLE = -892;
-    public static final int ERROR_UNIMPLEMENTED = -890;
-    public static final int ERROR_UNAVAILABLE = -889;
-    public static final int ERROR_NO_FREE_HANDLES = -888;
-    public static final int ERROR_NO_MEMORY = -887;
-    public static final int ERROR_NULL = -886;
-    public static final int ERROR_TIMEOUT = -885;
-    public static final int ERROR_WOULD_BLOCK = -884;
-    public static final int ERROR_INVALID_FORMAT = -883;
-    public static final int ERROR_OUT_OF_RANGE = -882;
-    public static final int ERROR_NO_SERVICE = -881;
-    public static final int ERROR_INVALID_RATE = -880;
-    public static final int ERROR_CLOSED = -869;
-    public static final int ERROR_OK = 0;
+    public static final int ERROR_BASE = -900; // must match Oboe
+    public static final int ERROR_DISCONNECTED = -899; // must match Oboe
+    public static final int ERROR_ILLEGAL_ARGUMENT = -898; // must match Oboe
+    public static final int ERROR_INTERNAL = -896; // must match Oboe
+    public static final int ERROR_INVALID_STATE = -895; // must match Oboe
+    public static final int ERROR_INVALID_HANDLE = -892; // must match Oboe
+    public static final int ERROR_UNIMPLEMENTED = -890; // must match Oboe
+    public static final int ERROR_UNAVAILABLE = -889; // must match Oboe
+    public static final int ERROR_NO_FREE_HANDLES = -888; // must match Oboe
+    public static final int ERROR_NO_MEMORY = -887; // must match Oboe
+    public static final int ERROR_NULL = -886; // must match Oboe
+    public static final int ERROR_TIMEOUT = -885; // must match Oboe
+    public static final int ERROR_WOULD_BLOCK = -884; // must match Oboe
+    public static final int ERROR_INVALID_FORMAT = -883; // must match Oboe
+    public static final int ERROR_OUT_OF_RANGE = -882; // must match Oboe
+    public static final int ERROR_NO_SERVICE = -881; // must match Oboe
+    public static final int ERROR_INVALID_RATE = -880; // must match Oboe
+    public static final int ERROR_CLOSED = -869; // must match Oboe
+    public static final int ERROR_OK = 0; // must match Oboe
 
     public static final int USAGE_MEDIA = 1;
     public static final int USAGE_VOICE_COMMUNICATION = 2;