diff --git a/image_build_test.go b/image_build_test.go
index ec0cbe2ee4..b9d04f817a 100644
--- a/image_build_test.go
+++ b/image_build_test.go
@@ -27,6 +27,8 @@ func TestImageBuildError(t *testing.T) {
 }
 
 func TestImageBuild(t *testing.T) {
+	v1 := "value1"
+	v2 := "value2"
 	emptyRegistryConfig := "bnVsbA=="
 	buildCases := []struct {
 		buildOptions           types.ImageBuildOptions
@@ -105,13 +107,14 @@ func TestImageBuild(t *testing.T) {
 		},
 		{
 			buildOptions: types.ImageBuildOptions{
-				BuildArgs: map[string]string{
-					"ARG1": "value1",
-					"ARG2": "value2",
+				BuildArgs: map[string]*string{
+					"ARG1": &v1,
+					"ARG2": &v2,
+					"ARG3": nil,
 				},
 			},
 			expectedQueryParams: map[string]string{
-				"buildargs": `{"ARG1":"value1","ARG2":"value2"}`,
+				"buildargs": `{"ARG1":"value1","ARG2":"value2","ARG3":null}`,
 				"rm":        "0",
 			},
 			expectedTags:           []string{},