diff --git a/libvo/vo_fbdev.c b/libvo/vo_fbdev.c
index 8f3001a81f..575b9810c8 100644
--- a/libvo/vo_fbdev.c
+++ b/libvo/vo_fbdev.c
@@ -501,7 +501,7 @@ static range_t *str2range(char *s)
 	for (i = 0; *endptr; i++) {
 		if (*s == ',')
 			goto out_err;
-		if (!(r = (range_t *) realloc(r, sizeof(*r) * i + 2))) {
+		if (!(r = (range_t *) realloc(r, sizeof(*r) * (i + 2)))) {
 			printf("can't realloc 'r'\n");
 			return NULL;
 		}