diff --git a/src/at_response.c b/src/at_response.c
index 94b958f5..b1053f3e 100644
--- a/src/at_response.c
+++ b/src/at_response.c
@@ -328,7 +328,7 @@ static int at_response_ok(struct pvt* const pvt, const at_res_t at_res, const at
             break;
 
         case CMD_AT_CSSN:
-            at_ok_response_dbg(1, pvt, ecmd, "Supplementary Service Notification enabled successfuly");
+            at_ok_response_dbg(1, pvt, ecmd, "Supplementary Service Notification enabled");
             break;
 
         case CMD_AT_CMGF: