diff --git a/sys/x86/iommu/intel_drv.c b/sys/x86/iommu/intel_drv.c
index 9401892aa9d..0b25620114c 100644
--- a/sys/x86/iommu/intel_drv.c
+++ b/sys/x86/iommu/intel_drv.c
@@ -159,8 +159,7 @@ dmar_count_iter(ACPI_DMAR_HEADER *dmarh, void *arg)
 
 int dmar_rmrr_enable = 1;
 
-static int dmar_enable = 1;
-
+static int dmar_enable = 0;
 static void
 dmar_identify(driver_t *driver, device_t parent)
 {