diff --git a/main/callerid.c b/main/callerid.c
index c92f84ba4d..a67b1c6946 100644
--- a/main/callerid.c
+++ b/main/callerid.c
@@ -1103,6 +1103,9 @@ static struct {
 int ast_parse_caller_presentation(const char *data)
 {
 	int i;
+	if (!data) {
+		return -1;
+	}
 
 	for (i = 0; i < ARRAY_LEN(pres_types); i++) {
 		if (!strcasecmp(pres_types[i].name, data))