diff --git a/Makefile.inc.in b/Makefile.inc.in
index af8e57a96c4d233f08729f4e33a0d160c82f008b..c93b9dcbcae03aa583dbdb842de6d639b148873c 100644
--- a/Makefile.inc.in
+++ b/Makefile.inc.in
@@ -29,7 +29,7 @@ CPPFLAGS            = @CPPFLAGS@
 CFLAGS_DEP          = -MMD -MP
 LIBS                = @LIBS@
 LDFLAGS             = @LDFLAGS@
-INSTALL_FLAGS       = -m 664
+INSTALL_FLAGS       = -m 644
 LIB_SHARED_LINK     = -shared -Wl,-soname -Wl,$(LIB_SHARED_FULL)
 LIB_SHARED_LINK_OSX = -dynamiclib -Wl,-undefined -Wl,dynamic_lookup -compatibility_version $(LIB_VERSION) -current_version $(LIB_VERSION) -Wl,-single_module -mmacosx-version-min=10.7 -install_name ${CURDIR}/$(LIB_SHARED_FULL)