diff --git a/pkg/engine/context/imageutils.go b/pkg/engine/context/imageutils.go
index d672c5da2b..dc76a794f1 100644
--- a/pkg/engine/context/imageutils.go
+++ b/pkg/engine/context/imageutils.go
@@ -127,6 +127,15 @@ func convertToImageInfo(containers []interface{}) (images []*containerImage, err
 				digest = digested.Digest().String()
 			}
 
+			// set default registry and tag
+			if registry == "" {
+				registry = "docker.io"
+			}
+
+			if tag == "" {
+				tag = "latest"
+			}
+
 			images = append(images, &containerImage{
 				Name: container["name"].(string),
 				Image: imageInfo{
diff --git a/pkg/engine/context/imageutils_test.go b/pkg/engine/context/imageutils_test.go
index e88a3e8115..a599fe80c0 100644
--- a/pkg/engine/context/imageutils_test.go
+++ b/pkg/engine/context/imageutils_test.go
@@ -17,12 +17,12 @@ func Test_extractImageInfo(t *testing.T) {
 		{
 			raw:            []byte(`{"apiVersion": "v1","kind": "Pod","metadata": {"name": "myapp"},"spec": {"initContainers": [{"name": "init","image": "index.docker.io/busybox:v1.2.3"}],"containers": [{"name": "nginx","image": "nginx:latest"}]}}`),
 			initContainers: []*containerImage{{Name: "init", Image: imageInfo{Registry: "index.docker.io", Name: "busybox", Tag: "v1.2.3"}}},
-			containers:     []*containerImage{{Name: "nginx", Image: imageInfo{Name: "nginx", Tag: "latest"}}},
+			containers:     []*containerImage{{Name: "nginx", Image: imageInfo{Registry: "docker.io", Name: "nginx", Tag: "latest"}}},
 		},
 		{
 			raw:            []byte(`{"apiVersion": "apps/v1","kind": "Deployment","metadata": {"name": "myapp"},"spec": {"selector": {"matchLabels": {"app": "myapp"}},"template": {"metadata": {"labels": {"app": "myapp"}},"spec": {"initContainers": [{"name": "init","image": "fictional.registry.example:10443/imagename:tag@sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}],"containers": [{"name": "myapp","image": "fictional.registry.example:10443/imagename"}]}}}}`),
 			initContainers: []*containerImage{{Name: "init", Image: imageInfo{Registry: "fictional.registry.example:10443", Name: "imagename", Tag: "tag", Digest: "sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"}}},
-			containers:     []*containerImage{{Name: "myapp", Image: imageInfo{Registry: "fictional.registry.example:10443", Name: "imagename"}}}},
+			containers:     []*containerImage{{Name: "myapp", Image: imageInfo{Registry: "fictional.registry.example:10443", Name: "imagename", Tag: "latest"}}}},
 		{
 			raw:        []byte(`{"apiVersion": "batch/v1beta1","kind": "CronJob","metadata": {"name": "hello"},"spec": {"schedule": "*/1 * * * *","jobTemplate": {"spec": {"template": {"spec": {"containers": [{"name": "hello","image": "b.gcr.io/test.example.com/my-app:test.example.com"}]}}}}}}`),
 			containers: []*containerImage{{Name: "hello", Image: imageInfo{Registry: "b.gcr.io", Name: "test.example.com/my-app", Tag: "test.example.com"}}},