diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c
index 23edddb1..f9fed87e 100644
--- a/shared-core/i915_irq.c
+++ b/shared-core/i915_irq.c
@@ -62,7 +62,7 @@ static inline void
 i915_disable_irq(drm_i915_private_t *dev_priv, uint32_t mask)
 {
 	if (dev_priv->irq_use_mask) {
-		if ((dev_priv->irq_enable_reg & mask) != mask) {
+		if ((dev_priv->irq_mask_reg & mask) != mask) {
 			dev_priv->irq_mask_reg |= mask;
 			I915_WRITE(I915REG_INT_MASK_R, dev_priv->irq_mask_reg);
 			(void) I915_READ(I915REG_INT_MASK_R);