diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index ec1428dbdf9d..9b01f88ae476 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -2659,7 +2659,7 @@ static int vfio_iommu_iova_build_caps(struct vfio_iommu *iommu,
 static int vfio_iommu_migration_build_caps(struct vfio_iommu *iommu,
 					   struct vfio_info_cap *caps)
 {
-	struct vfio_iommu_type1_info_cap_migration cap_mig;
+	struct vfio_iommu_type1_info_cap_migration cap_mig = {};
 
 	cap_mig.header.id = VFIO_IOMMU_TYPE1_INFO_CAP_MIGRATION;
 	cap_mig.header.version = 1;