diff --git a/src/modules/sms/libsms_modem.c b/src/modules/sms/libsms_modem.c
index 7bf702f6c7b..5093d28ee2c 100644
--- a/src/modules/sms/libsms_modem.c
+++ b/src/modules/sms/libsms_modem.c
@@ -213,7 +213,7 @@ int setmodemparams( struct modem *mdm )
 
 int initmodem(struct modem *mdm, cds_report cds_report_f)
 {
-	char command[100];
+	char command[MAX_CHAR_BUF+12];
 	char answer[100];
 	int retries=0;
 	int success=0;