diff --git a/php/src/Docker/DockerActionManager.php b/php/src/Docker/DockerActionManager.php
index 75d7da08..851aeb0f 100644
--- a/php/src/Docker/DockerActionManager.php
+++ b/php/src/Docker/DockerActionManager.php
@@ -100,7 +100,7 @@ class DockerActionManager
         $runningDigest = $this->GetRepoDigestOfContainer($container->GetIdentifier());
         $remoteDigest = $this->dockerHubManager->GetLatestDigestOfTag($container->GetContainerName(), $tag);
 
-        if ($runningDigest === $remoteDigest || $remoteDigest === null) {
+        if ($runningDigest === $remoteDigest || $remoteDigest === null || $runningDigest === null) {
             return new VersionEqualState();
         } else {
             return new VersionDifferentState();