diff --git a/config/mh-cygwin32 b/config/mh-cygwin32
index a49f0eef25..29f165667a 100644
--- a/config/mh-cygwin32
+++ b/config/mh-cygwin32
@@ -7,6 +7,3 @@ CXXFLAGS=-O2
 # built without debugging information
 
 LIBGCC2_DEBUG_CFLAGS=
-
-# custom installation rules for cygwin32 (append .exe to binaries, etc.)
-INSTALL_DOSREL=install-dosrel