diff --git a/client.js b/client.js
index e170e5b..485f408 100644
--- a/client.js
+++ b/client.js
@@ -146,7 +146,7 @@ const session = smpp.connect(
 							}
 						},
 						"",
-						`1000/${options.mps} ms`
+						`${1 / options.mps} s`
 					);
 				}
 			}