diff --git a/drivers/dma-buf/st-dma-fence-unwrap.c b/drivers/dma-buf/st-dma-fence-unwrap.c
index 4d9d313b460c..c5353b36f0e4 100644
--- a/drivers/dma-buf/st-dma-fence-unwrap.c
+++ b/drivers/dma-buf/st-dma-fence-unwrap.c
@@ -370,6 +370,15 @@ static void test_unwrap_merge_seqno(struct kunit *test)
 	dma_fence_put(f1);
 }
 
+static void test_dedup_empty(struct kunit *test)
+{
+	struct dma_fence *fence[1] = { NULL };
+	int ret;
+
+	ret = dma_fence_dedup_array(fence, 0);
+	KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
 static void test_unwrap_merge_order(struct kunit *test)
 {
 	struct dma_fence *fence, *f1, *f2, *a1, *a2, *c1, *c2;
@@ -595,6 +604,7 @@ static struct kunit_case dma_fence_unwrap_cases[] = {
 	KUNIT_CASE(test_unwrap_merge_order),
 	KUNIT_CASE(test_unwrap_merge_complex),
 	KUNIT_CASE(test_unwrap_merge_complex_seqno),
+	KUNIT_CASE(test_dedup_empty),
 	{}
 };