diff --git a/config/linux-c216.config b/config/linux-c216.config
index f14388a0..764d278d 100644
--- a/config/linux-c216.config
+++ b/config/linux-c216.config
@@ -2259,7 +2259,7 @@ CONFIG_IOMMU_SUPPORT=y
 CONFIG_DMAR_TABLE=y
 CONFIG_INTEL_IOMMU=y
 CONFIG_INTEL_IOMMU_SVM=y
-# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
+CONFIG_INTEL_IOMMU_DEFAULT_ON=y
 CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set
 # CONFIG_IRQ_REMAP is not set
diff --git a/config/linux-x230-flash.config b/config/linux-x230-flash.config
index 11959504..baa24a54 100644
--- a/config/linux-x230-flash.config
+++ b/config/linux-x230-flash.config
@@ -1926,7 +1926,7 @@ CONFIG_IOMMU_SUPPORT=y
 CONFIG_DMAR_TABLE=y
 CONFIG_INTEL_IOMMU=y
 CONFIG_INTEL_IOMMU_SVM=y
-# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
+CONFIG_INTEL_IOMMU_DEFAULT_ON=y
 CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set
 # CONFIG_IRQ_REMAP is not set
diff --git a/config/linux-x230-legacy.config b/config/linux-x230-legacy.config
index 32fcc31c..29089259 100644
--- a/config/linux-x230-legacy.config
+++ b/config/linux-x230-legacy.config
@@ -2040,7 +2040,7 @@ CONFIG_IOMMU_SUPPORT=y
 CONFIG_DMAR_TABLE=y
 CONFIG_INTEL_IOMMU=y
 CONFIG_INTEL_IOMMU_SVM=y
-# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
+CONFIG_INTEL_IOMMU_DEFAULT_ON=y
 CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set
 # CONFIG_IRQ_REMAP is not set
diff --git a/config/linux-x230-maximized.config b/config/linux-x230-maximized.config
index 2853274d..965cfef1 100644
--- a/config/linux-x230-maximized.config
+++ b/config/linux-x230-maximized.config
@@ -2256,7 +2256,7 @@ CONFIG_IOMMU_SUPPORT=y
 CONFIG_DMAR_TABLE=y
 CONFIG_INTEL_IOMMU=y
 CONFIG_INTEL_IOMMU_SVM=y
-# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
+CONFIG_INTEL_IOMMU_DEFAULT_ON=y
 CONFIG_INTEL_IOMMU_FLOPPY_WA=y
 # CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON is not set
 # CONFIG_IRQ_REMAP is not set