diff --git a/playback.cpp b/playback.cpp
index 3828cf1..8fe3a00 100644
--- a/playback.cpp
+++ b/playback.cpp
@@ -9,7 +9,7 @@ size_t CalculateBufSize(SDL_AudioSpec *obtained, double max_seconds, size_t samp
     return ((((samples_override == 0) ? obtained->samples : samples_override) * max_seconds) + 1) * sizeof(SAMPLETYPE) * obtained->channels;
 }
 void Playback::SDLCallbackInner(Uint8 *stream, int len) {
-    while (st->numSamples() < len) {
+    while (st->numSamples() <= (uint)len) {
         general_mixer(NULL, buf, bufsize);
         st->putSamples((SAMPLETYPE*)buf, bufsize / sizeof(SAMPLETYPE) / spec.channels);
     }