diff --git a/include/utils/CallStack.h b/include/utils/CallStack.h
index c2c8ce514..8817120ef 100644
--- a/include/utils/CallStack.h
+++ b/include/utils/CallStack.h
@@ -50,7 +50,7 @@ public:
     
     void clear();
 
-    void update(int32_t ignoreDepth=0, int32_t maxDepth=MAX_DEPTH);
+    void update(int32_t ignoreDepth=1, int32_t maxDepth=MAX_DEPTH);
 
     // Dump a stack trace to the log
     void dump(const char* prefix = 0) const;
diff --git a/libs/surfaceflinger_client/Surface.cpp b/libs/surfaceflinger_client/Surface.cpp
index 9467a4cf0..6d82b5d9a 100644
--- a/libs/surfaceflinger_client/Surface.cpp
+++ b/libs/surfaceflinger_client/Surface.cpp
@@ -489,6 +489,9 @@ status_t Surface::validate() const
         LOGE("[Surface] using an invalid surface, "
                 "identity=%u should be %d",
                 mIdentity, identity);
+        CallStack stack;
+        stack.update();
+        stack.dump("Surface");
         return NO_INIT;
     }
 
@@ -497,6 +500,9 @@ status_t Surface::validate() const
     if (err != NO_ERROR) {
         LOGE("surface (identity=%u) is invalid, err=%d (%s)",
                 mIdentity, err, strerror(-err));
+        CallStack stack;
+        stack.update();
+        stack.dump("Surface");
         return err;
     }