diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c
index 767ec092accd..3ecbd54d0bc2 100644
--- a/drivers/iommu/intel/dmar.c
+++ b/drivers/iommu/intel/dmar.c
@@ -47,7 +47,7 @@ struct dmar_res_callback {
 
 /*
  * Assumptions:
- * 1) The hotplug framework guarentees that DMAR unit will be hot-added
+ * 1) The hotplug framework guarantees that DMAR unit will be hot-added
  *    before IO devices managed by that unit.
  * 2) The hotplug framework guarantees that DMAR unit will be hot-removed
  *    after IO devices managed by that unit.