diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index c3b304ab5..ee7636dbf 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -4034,7 +4034,7 @@ find_fast_cwd_pointer ()
   if (!get_dir || !ent_crit)
     return NULL;
   /* Search first relative call instruction in RtlGetCurrentDirectory_U. */
-  const uint8_t *rcall = (const uint8_t *) memchr (get_dir, 0xe8, 40);
+  const uint8_t *rcall = (const uint8_t *) memchr (get_dir, 0xe8, 80);
   if (!rcall)
     return NULL;
   /* Fetch offset from instruction and compute address of called function.
@@ -4133,7 +4133,7 @@ find_fast_cwd_pointer ()
   if (!get_dir || !ent_crit)
     return NULL;
   /* Search first relative call instruction in RtlGetCurrentDirectory_U. */
-  const uint8_t *rcall = (const uint8_t *) memchr (get_dir, 0xe8, 32);
+  const uint8_t *rcall = (const uint8_t *) memchr (get_dir, 0xe8, 64);
   if (!rcall)
     return NULL;
   /* Fetch offset from instruction and compute address of called function.