diff --git a/src/mesa/drivers/dri/intel/intel_reg.h b/src/mesa/drivers/dri/intel/intel_reg.h
index 1cfb4645129..dd91a1586c7 100644
--- a/src/mesa/drivers/dri/intel/intel_reg.h
+++ b/src/mesa/drivers/dri/intel/intel_reg.h
@@ -291,6 +291,8 @@
 #define SO_NUM_PRIMS_WRITTEN2_IVB	0x5210
 #define SO_NUM_PRIMS_WRITTEN3_IVB	0x5218
 
+#define GEN7_SO_WRITE_OFFSET(n)         (0x5280 + (n) * 4)
+
 #define TIMESTAMP                       0x2358
 
 #define BCS_SWCTRL                      0x22200