diff --git a/channels/chan_dahdi.c b/channels/chan_dahdi.c
index 31e95020f..2fa7ccaec 100644
--- a/channels/chan_dahdi.c
+++ b/channels/chan_dahdi.c
@@ -8333,7 +8333,7 @@ static void *analog_ss_thread(void *data)
 	int counter;
 	int samples = 0;
 	struct ast_smdi_md_message *smdi_msg = NULL;
-	int flags;
+	int flags = 0;
 	int i;
 	int timeout;
 	int getforward = 0;
diff --git a/channels/sig_analog.c b/channels/sig_analog.c
index 4a548391c..1f28f049f 100644
--- a/channels/sig_analog.c
+++ b/channels/sig_analog.c
@@ -1418,7 +1418,7 @@ static void *__analog_ss_thread(void *data)
 	char numbuf[ANALOG_MAX_CID];
 	struct callerid_state *cs = NULL;
 	char *name = NULL, *number = NULL;
-	int flags;
+	int flags = 0;
 	int timeout;
 	int getforward = 0;
 	char *s1, *s2;