diff --git a/lib/bzip2/bzlib_decompress.c b/lib/bzip2/bzlib_decompress.c
index 4412b8a23e..513ae8cbb7 100644
--- a/lib/bzip2/bzlib_decompress.c
+++ b/lib/bzip2/bzlib_decompress.c
@@ -330,7 +330,7 @@ Int32 BZ2_decompress ( DState* s )
       GET_BITS(BZ_X_SELECTOR_1, nGroups, 3);
       if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR);
       GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15);
-      if (nSelectors < 1) RETURN(BZ_DATA_ERROR);
+      if (nSelectors < 1 || nSelectors > BZ_MAX_SELECTORS) RETURN(BZ_DATA_ERROR);
       for (i = 0; i < nSelectors; i++) {
 	 j = 0;
 	 while (True) {