diff --git a/zomp/lib/otpr/zx/0.13.2/src/zx.erl b/zomp/lib/otpr/zx/0.13.2/src/zx.erl
index 2ef17cf..caa85b5 100644
--- a/zomp/lib/otpr/zx/0.13.2/src/zx.erl
+++ b/zomp/lib/otpr/zx/0.13.2/src/zx.erl
@@ -325,13 +325,21 @@ done({error, Code}) when is_integer(Code) ->
     init:stop(Code);
 done({error, Reason}) ->
     ok = zx_daemon:idle(),
-    Message = "Operation failed with: ~160tp",
-    ok = tell(error, Message, [Reason]),
+    {Message, Subs} =
+        case unicode:characters_to_list(Reason) of
+            {_, _, _} -> {"Operation failed with: ~160tp", Reason};
+            String    -> {"Operation failed with: ~ts", String}
+        end,
+    ok = tell(error, Message, [Subs]),
     init:stop(1);
-done({error, Info, Code}) ->
+done({error, Reason, Code}) ->
     ok = zx_daemon:idle(),
-    Message = "Operation failed with: ~160tp",
-    ok = tell(error, Message, [Info]),
+    {Message, Subs} =
+        case unicode:characters_to_list(Reason) of
+            {_, _, _} -> {"Operation failed with: ~160tp", Reason};
+            String    -> {"Operation failed with: ~ts", String}
+        end,
+    ok = tell(error, Message, [Subs]),
     init:stop(Code);
 done({error, Class, Error, Stacktrace}) ->
     ok = zx_daemon:idle(),