diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index da8d345ab..b958a0619 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -189,7 +189,7 @@ _read (int fd, void *ptr, size_t len)
       return -1;
     }
 
-  // set_sig_errno (0);
+  set_sig_errno (0);
   fhandler_base *fh = dtable[fd];
 
   /* Could block, so let user know we at least got here.  */