1 files changed, 1 insertions, 1 deletions

diff --git a/lib/zlib_inflate/inffast.c b/lib/zlib_inflate/inffast.c
index fa62fc7a94f9..2c13ecc5bb2c 100644
--- a/lib/zlib_inflate/inffast.c
+++ b/lib/zlib_inflate/inffast.c
@@ -286,7 +286,7 @@ void inflate_fast(z_streamp strm, unsigned start)
                     } else { /* dist == 1 or dist == 2 */
                         unsigned short pat16;
 
-                        pat16 = *(sout-2+2*OFF);
+                        pat16 = *(sout-1+OFF);
                         if (dist == 1) {
                                 union uu mm;
                                 /* copy one char pattern to both bytes */