diff --git a/src/r600_reg_r6xx.h b/src/r600_reg_r6xx.h
index b4cc639a..fec02ac4 100644
--- a/src/r600_reg_r6xx.h
+++ b/src/r600_reg_r6xx.h
@@ -417,11 +417,11 @@ enum {
 	ALPHA_TO_MASK_ENABLE                              = 1 << 0,
 	ALPHA_TO_MASK_OFFSET0_mask                        = 0x03 << 8,
 	ALPHA_TO_MASK_OFFSET0_shift                       = 8,
-	ALPHA_TO_MASK_OFFSET1_mask                        = 0x03 << 8,
+	ALPHA_TO_MASK_OFFSET1_mask                        = 0x03 << 10,
 	ALPHA_TO_MASK_OFFSET1_shift                       = 10,
-	ALPHA_TO_MASK_OFFSET2_mask                        = 0x03 << 8,
+	ALPHA_TO_MASK_OFFSET2_mask                        = 0x03 << 12,
 	ALPHA_TO_MASK_OFFSET2_shift                       = 12,
-	ALPHA_TO_MASK_OFFSET3_mask                        = 0x03 << 8,
+	ALPHA_TO_MASK_OFFSET3_mask                        = 0x03 << 14,
 	ALPHA_TO_MASK_OFFSET3_shift                       = 14,
 
 //  SQ_VTX_CONSTANT_WORD2_0                               = 0x00038008,