diff --git a/src/gallium/drivers/r300/compiler/r3xx_vertprog.c b/src/gallium/drivers/r300/compiler/r3xx_vertprog.c
index 559a8ff54e7..3626d2913c4 100644
--- a/src/gallium/drivers/r300/compiler/r3xx_vertprog.c
+++ b/src/gallium/drivers/r300/compiler/r3xx_vertprog.c
@@ -688,10 +688,10 @@ static int transform_nonnative_modifiers(
 			new_inst->U.I.SrcReg[1] = inst->U.I.SrcReg[i];
 			new_inst->U.I.SrcReg[1].Negate ^= RC_MASK_XYZW;
 
-			memset(&inst->U.I.SrcReg[i], 0, sizeof(inst->U.I.SrcReg[i]));
 			inst->U.I.SrcReg[i].File = RC_FILE_TEMPORARY;
 			inst->U.I.SrcReg[i].Index = temp;
 			inst->U.I.SrcReg[i].Swizzle = RC_SWIZZLE_XYZW;
+			inst->U.I.SrcReg[i].RelAddr = 0;
 		}
 	}
 	return 1;