diff --git a/config/crd/bases/anywhere.eks.amazonaws.com_tinkerbellmachineconfigs.yaml b/config/crd/bases/anywhere.eks.amazonaws.com_tinkerbellmachineconfigs.yaml
index 0dca96ecb00cd..4ca5c042e648b 100644
--- a/config/crd/bases/anywhere.eks.amazonaws.com_tinkerbellmachineconfigs.yaml
+++ b/config/crd/bases/anywhere.eks.amazonaws.com_tinkerbellmachineconfigs.yaml
@@ -155,7 +155,6 @@ spec:
             required:
             - hardwareSelector
             - osFamily
-            - osImageURL
             type: object
           status:
             description: TinkerbellMachineConfigStatus defines the observed state
diff --git a/pkg/api/v1alpha1/tinkerbellmachineconfig_types.go b/pkg/api/v1alpha1/tinkerbellmachineconfig_types.go
index e81649705938d..f9e89b5b848d7 100644
--- a/pkg/api/v1alpha1/tinkerbellmachineconfig_types.go
+++ b/pkg/api/v1alpha1/tinkerbellmachineconfig_types.go
@@ -10,10 +10,11 @@ import (
 
 // TinkerbellMachineConfigSpec defines the desired state of TinkerbellMachineConfig.
 type TinkerbellMachineConfigSpec struct {
-	HardwareSelector    HardwareSelector     `json:"hardwareSelector"`
-	TemplateRef         Ref                  `json:"templateRef,omitempty"`
-	OSFamily            OSFamily             `json:"osFamily"`
-	OSImageURL          string               `json:"osImageURL"`
+	HardwareSelector HardwareSelector `json:"hardwareSelector"`
+	TemplateRef      Ref              `json:"templateRef,omitempty"`
+	OSFamily         OSFamily         `json:"osFamily"`
+	//+optional
+	OSImageURL          string               `json:"osImageURL,omitempty"`
 	Users               []UserConfiguration  `json:"users,omitempty"`
 	HostOSConfiguration *HostOSConfiguration `json:"hostOSConfiguration,omitempty"`
 }