diff --git a/pkg/kubelet/dockershim/docker_service.go b/pkg/kubelet/dockershim/docker_service.go
index ac1f80ddf71..9647d149c05 100644
--- a/pkg/kubelet/dockershim/docker_service.go
+++ b/pkg/kubelet/dockershim/docker_service.go
@@ -455,10 +455,13 @@ func (ds *dockerService) getDockerVersionFromCache() (*dockertypes.Version, erro
 	// We only store on key in the cache.
 	const dummyKey = "version"
 	value, err := ds.versionCache.Get(dummyKey)
-	dv := value.(*dockertypes.Version)
 	if err != nil {
 		return nil, err
 	}
+	dv, ok := value.(*dockertypes.Version)
+	if !ok {
+		return nil, fmt.Errorf("Converted to *dockertype.Version error")
+	}
 	return dv, nil
 }