diff --git a/channels/sig_pri.c b/channels/sig_pri.c
index 12f1958d3c..92b5d0c620 100644
--- a/channels/sig_pri.c
+++ b/channels/sig_pri.c
@@ -2718,7 +2718,7 @@ int sig_pri_call(struct sig_pri_chan *p, struct ast_channel *ast, char *rdest, i
 	char dest[256]; /* must be same length as p->dialdest */
 	struct ast_party_subaddress dialed_subaddress; /* Called subaddress */
 	struct pri_sr *sr;
-	char *c, *l, *n, *s = NULL;
+	char *c, *l, *n, *s;
 #ifdef SUPPORT_USERUSER
 	const char *useruser;
 #endif
@@ -2745,39 +2745,40 @@ int sig_pri_call(struct sig_pri_chan *p, struct ast_channel *ast, char *rdest, i
 	p->dialdest[0] = '\0';
 	p->outgoing = 1;
 
-	/* setup dialed_subaddress if found */
-	ast_party_subaddress_init(&dialed_subaddress);
-	c = strrchr(dest, ':');
+	c = strchr(dest, '/');
 	if (c) {
-		*c = '\0';
 		c++;
+	} else {
+		c = "";
+	}
+
+	/* setup dialed_subaddress if found */
+	ast_party_subaddress_init(&dialed_subaddress);
+	s = strchr(c, ':');
+	if (s) {
+		*s = '\0';
+		s++;
 		/* prefix */
 		/* 'n' = NSAP */
 		/* 'U' = odd, 'u'= even */
 		/* Default = NSAP */
-		switch (*c) {
+		switch (*s) {
 		case 'U':
 			dialed_subaddress.odd_even_indicator = 1;
 			/* fall through */
 		case 'u':
-			c++;
+			s++;
 			dialed_subaddress.type = 2;
 			break;
 		case 'N':
 		case 'n':
-			c++;
+			s++;
 			/* default already covered with ast_party_subaddress_init */
 			break;
 		}
-		dialed_subaddress.str = c;
+		dialed_subaddress.str = s;
 		dialed_subaddress.valid = 1;
-	}
-
-	c = strchr(dest, '/');
-	if (c) {
-		c++;
-	} else {
-		c = "";
+		s = NULL;
 	}
 
 	l = NULL;