--- configure.in
+++ configure.in
@@ -186,7 +186,6 @@
     fi
     ])
 
-AC_CHECK_DESTDIR([/usr/lib/asterisk/modules /usr/local/lib/asterisk/modules /opt/local/lib/asterisk/modules])
 
 dnl Checks for library functions.
 AC_FUNC_MEMCMP
@@ -241,7 +240,6 @@
 AC_SUBST([PACKAGE_TARNAME])
 AC_SUBST([PACKAGE_REVISION])
 AC_SUBST([PACKAGE_VERSION])
-AC_SUBST([DESTDIR])
 AC_SUBST([AC_CFLAGS])
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT
--- Makefile.in
+++ Makefile.in
@@ -51,7 +51,7 @@
 
 install: all
 	$(STRIP) $(PROJM)
-	$(INSTALL) -m 755 $(PROJM) @DESTDIR@
+	$(INSTALL) -m 755 $(PROJM) $(DESTDIR)/usr/lib/asterisk/modules
 
 $(PROJM): $(chan_donglem_so_OBJS) Makefile
 	$(LD) $(LDFLAGS) $(SOLINK) -o $@ $(chan_donglem_so_OBJS) $(LIBS)