diff --git a/libc/kernel/common/linux/msm_mdp.h b/libc/kernel/common/linux/msm_mdp.h
index 240b754..c355218 100644
--- a/libc/kernel/common/linux/msm_mdp.h
+++ b/libc/kernel/common/linux/msm_mdp.h
@@ -47,6 +47,7 @@
 #define MDP_ROT_270 (MDP_ROT_90|MDP_FLIP_UD|MDP_FLIP_LR)
 #define MDP_DITHER 0x8
 #define MDP_BLUR 0x10
+#define MDP_BLEND_FG_PREMULT 0x20000
 
 #define MDP_TRANSP_NOP 0xffffffff
 #define MDP_ALPHA_NOP 0xff