diff --git a/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java b/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java
index a3a7e95..928c3ea 100644
--- a/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java
+++ b/src/com/android/gallery3d/filtershow/filters/FilterGradRepresentation.java
@@ -104,7 +104,7 @@
                 count++;
             }
         }
-        return "c=" + mBands.indexOf(mBands) + "[" + mBands.size() + "]" + count;
+        return "c=" + mBands.indexOf(mCurrentBand) + "[" + mBands.size() + "]" + count;
     }
 
     private void creatExample() {