diff --git a/pkg/apis/machineconfiguration.openshift.io/v1/types.go b/pkg/apis/machineconfiguration.openshift.io/v1/types.go
index b1a2735d2c..09390c64ca 100644
--- a/pkg/apis/machineconfiguration.openshift.io/v1/types.go
+++ b/pkg/apis/machineconfiguration.openshift.io/v1/types.go
@@ -448,11 +448,11 @@ type ContainerRuntimeConfiguration struct {
 	// logSizeMax specifies the Maximum size allowed for the container log file.
 	// Negative numbers indicate that no size limit is imposed.
 	// If it is positive, it must be >= 8192 to match/exceed conmon's read buffer.
-	LogSizeMax resource.Quantity `json:"logSizeMax"`
+	LogSizeMax resource.Quantity `json:"logSizeMax,omitempty"`
 
 	// overlaySize specifies the maximum size of a container image.
 	// This flag can be used to set quota on the size of container images. (default: 10GB)
-	OverlaySize resource.Quantity `json:"overlaySize"`
+	OverlaySize resource.Quantity `json:"overlaySize,omitempty"`
 }
 
 // ContainerRuntimeConfigStatus defines the observed state of a ContainerRuntimeConfig