diff --git a/src/rougail/template.py b/src/rougail/template.py
index a9fce3a0..a8484cf1 100644
--- a/src/rougail/template.py
+++ b/src/rougail/template.py
@@ -357,9 +357,9 @@ class CreoleTemplateEngine:
             data = str(cheetah_template)
         except CheetahNotFound as err:
             varname = err.args[0][13:-1]
-            raise TemplateError(_(f"Error: unknown variable used in template {destfilename} : {varname}"))
+            raise TemplateError(_(f"Error: unknown variable used in template {source} to {destfilename} : {varname}"))
         except Exception as err:
-            raise TemplateError(_(f"Error while instantiating template {destfilename}: {err}"))
+            raise TemplateError(_(f"Error while instantiating template {source} to {destfilename}: {err}"))
 
         with open(destfilename, 'w') as file_h:
             file_h.write(data)