diff --git a/pkg/kubelet/apis/config/validation/validation.go b/pkg/kubelet/apis/config/validation/validation.go
index 9d2fc0915b2..51163bc391e 100644
--- a/pkg/kubelet/apis/config/validation/validation.go
+++ b/pkg/kubelet/apis/config/validation/validation.go
@@ -160,6 +160,9 @@ func ValidateKubeletConfiguration(kc *kubeletconfig.KubeletConfiguration) error
 			allErrors = append(allErrors, fmt.Errorf("invalid configuration: MemorySwap.SwapBehavior %v must be one of: LimitedSwap, UnlimitedSwap", kc.MemorySwap.SwapBehavior))
 		}
 	}
+	if !localFeatureGate.Enabled(features.NodeSwapEnabled) && kc.MemorySwap != (kubeletconfig.MemorySwapConfiguration{}) {
+		allErrors = append(allErrors, fmt.Errorf("invalid configuration: MemorySwap.SwapBehavior cannot be set when NodeSwapEnabled feature flag is disabled"))
+	}
 
 	for _, val := range kc.EnforceNodeAllocatable {
 		switch val {
diff --git a/pkg/kubelet/apis/config/validation/validation_test.go b/pkg/kubelet/apis/config/validation/validation_test.go
index 3a4b057bdfc..66569687817 100644
--- a/pkg/kubelet/apis/config/validation/validation_test.go
+++ b/pkg/kubelet/apis/config/validation/validation_test.go
@@ -190,8 +190,9 @@ func TestValidateKubeletConfiguration(t *testing.T) {
 		Logging: componentbaseconfig.LoggingConfiguration{
 			Format: "",
 		},
+		MemorySwap: kubeletconfig.MemorySwapConfiguration{SwapBehavior: kubetypes.UnlimitedSwap},
 	}
-	const numErrsErrorCase1 = 29
+	const numErrsErrorCase1 = 30
 	if allErrors := ValidateKubeletConfiguration(errorCase1); len(allErrors.(utilerrors.Aggregate).Errors()) != numErrsErrorCase1 {
 		t.Errorf("expect %d errors, got %v", numErrsErrorCase1, len(allErrors.(utilerrors.Aggregate).Errors()))
 	}