diff -rupN src/lame-3.99.5/libmp3lame/set_get.c ../lame/libmp3lame/set_get.c
--- src/lame-3.99.5/libmp3lame/set_get.c	2011-05-07 12:05:17.000000000 -0400
+++ ../lame/libmp3lame/set_get.c	2017-09-06 11:07:30.000000000 -0400
@@ -68,6 +68,8 @@ int
 lame_set_in_samplerate(lame_global_flags * gfp, int in_samplerate)
 {
     if (is_lame_global_flags_valid(gfp)) {
+        if (in_samplerate < 1)
+            return -1;
         /* input sample rate in Hz,  default = 44100 Hz */
         gfp->samplerate_in = in_samplerate;
         return 0;