diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index f7ad97572c4d25ad7e34e7cd516d8f9d11d36d2a..00fda45728d749c91992c7546e982efd8edba79a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -940,7 +940,7 @@
 
 #define GT_PARITY_ERROR(dev) \
 	(GT_RENDER_L3_PARITY_ERROR_INTERRUPT | \
-	 IS_HASWELL(dev) ? GT_RENDER_L3_PARITY_ERROR_INTERRUPT_S1 : 0)
+	 (IS_HASWELL(dev) ? GT_RENDER_L3_PARITY_ERROR_INTERRUPT_S1 : 0))
 
 /* These are all the "old" interrupts */
 #define ILK_BSD_USER_INTERRUPT				(1<<5)