diff --git a/inflate.c b/inflate.c
index 8acbef4..ef60267 100644
--- a/inflate.c
+++ b/inflate.c
@@ -255,6 +255,8 @@
     struct inflate_state FAR *state;
 
     if (inflateStateCheck(strm)) return Z_STREAM_ERROR;
+    if (bits == 0)
+        return Z_OK;
     state = (struct inflate_state FAR *)strm->state;
     if (bits < 0) {
         state->hold = 0;