diff --git a/mbuni/mmsbox/bearerbox.c b/mbuni/mmsbox/bearerbox.c
index c2baa7d..68f314e 100644
--- a/mbuni/mmsbox/bearerbox.c
+++ b/mbuni/mmsbox/bearerbox.c
@@ -626,11 +626,11 @@ static Octstr *mm7soap_send(MmscGrp *mmc, Octstr *from, Octstr *to,
 	       tstatus, tmp ? tmp : "", 
 	       detail ? octstr_get_cstr(detail) : "");
 
-	  *error = octstr_format("Failed to deliver to MMC[url=%s, id=%S], status=[%d=>%S]!",
+	  *error = octstr_format("Failed to deliver to MMC[url=%s, id=%S], status=[%d=>%s]!",
 				 mmc->mmsc_url, 
 				 mmc->id,
 				 tstatus, 
-				 tmp);	  
+				 tmp ? tmp : "");	  
 	  octstr_destroy(detail);	  
      } else {	  
 	  ret = mm7_soap_header_value(mresp, octstr_imm("MessageID"));