diff --git a/src/main/java/io/fabric8/maven/docker/SourceMojo.java b/src/main/java/io/fabric8/maven/docker/SourceMojo.java
index c6acad3eb..93c226a84 100644
--- a/src/main/java/io/fabric8/maven/docker/SourceMojo.java
+++ b/src/main/java/io/fabric8/maven/docker/SourceMojo.java
@@ -78,7 +78,7 @@ protected void executeInternal(ServiceHub hub) throws DockerAccessException, Moj
                 }
             }
         }
-        if (sourceMode == BuildImageSelectMode.first && imageConfigs.size() > 0) {
+        if (sourceMode == BuildImageSelectMode.first && !imageConfigs.isEmpty()) {
             ImageConfiguration imageConfig = imageConfigs.get(0);
             File dockerTar = hub.getArchiveService().createDockerBuildArchive(imageConfig, params);
             projectHelper.attachArtifact(project, getArchiveType(imageConfig),