diff --git a/src/de/uni_passau/fim/seibt/gitwrapper/repo/GitWrapper.java b/src/de/uni_passau/fim/seibt/gitwrapper/repo/GitWrapper.java
index 2c0a418d4c331f65d01bd17dec7ec29b82e181c8..d115da54f2db82662057e04e2d594f099a638f49 100644
--- a/src/de/uni_passau/fim/seibt/gitwrapper/repo/GitWrapper.java
+++ b/src/de/uni_passau/fim/seibt/gitwrapper/repo/GitWrapper.java
@@ -184,6 +184,7 @@ public class GitWrapper extends ToolWrapper {
     public boolean isGitDir(File directory) {
 
         if (!directory.isDirectory()) {
+            LOG.warning(() -> String.format("The file '%s' does not exist or is not a directory.", directory));
             return false;
         }