diff --git a/src/client-ocurl/opentelemetry_client_ocurl.ml b/src/client-ocurl/opentelemetry_client_ocurl.ml
index 1085b678..cbc3447c 100644
--- a/src/client-ocurl/opentelemetry_client_ocurl.ml
+++ b/src/client-ocurl/opentelemetry_client_ocurl.ml
@@ -207,8 +207,8 @@ end = struct
       Atomic.incr n_errors;
 
       Printf.eprintf
-        "opentelemetry: export failed:\n  %s\n  curl code: %s\nurl: %s\n%!" msg
-        (Curl.strerror code) url;
+        "opentelemetry: export failed:\n  %s\n  curl code: %s\n  url: %s\n%!"
+        msg (Curl.strerror code) url;
 
       (* avoid crazy error loop *)
       Thread.delay 3.