diff --git a/bin/flt-plantuml.py b/bin/flt-plantuml.py
index e52b3d8..03e89e1 100755
--- a/bin/flt-plantuml.py
+++ b/bin/flt-plantuml.py
@@ -94,6 +94,11 @@ def plantuml(key, value, format, meta):
                 with open(src, "w") as f:
                     f.write(txt)
 
+            p = Popen(["whereis", "plantuml"], stderr=PIPE, stdout=PIPE)
+            (stdout, stderr) = p.communicate()
+            sys.stderr.write(stdout.decode() + "\n")
+            sys.stderr.write(stderr.decode() + "\n")
+
             p = Popen(["plantuml", "-t" + filetype, src], stderr=PIPE, stdout=PIPE)
             (stdout, stderr) = p.communicate()
             if stderr.decode() != "":