diff --git a/msm8x09.mk b/msm8x09.mk
index c3d9d98..91a04ca 100644
--- a/msm8x09.mk
+++ b/msm8x09.mk
@@ -17,4 +17,5 @@
   debug.composition.type=dyn \
   debug.hwc.dynThreshold=4.5 \
   debug.sf.hwc.canUseABC=1 \
-  debug.sf.disable_backpressure=1
+  debug.sf.disable_backpressure=1 \
+  debug.sf.latch_unsignaled=1 \