diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index ef0a5246700e546d025c668aa58b8d5349e14946..0182cff2c7ac75947bf6a2e746cbe0864a8a5c15 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -371,11 +371,11 @@ int dmar_disabled = 0;
 int dmar_disabled = 1;
 #endif /* CONFIG_INTEL_IOMMU_DEFAULT_ON */
 
-#ifdef INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
+#ifdef CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON
 int intel_iommu_sm = 1;
 #else
 int intel_iommu_sm;
-#endif /* INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON */
+#endif /* CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON */
 
 int intel_iommu_enabled = 0;
 EXPORT_SYMBOL_GPL(intel_iommu_enabled);