winmm: Final split of mmsystem.
diff --git a/configure.ac b/configure.ac
index 7fddf44..68f0f27 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2305,6 +2305,7 @@
 WINE_CONFIG_MAKEFILE([dlls/mlang/Makefile],[dlls/Makedll.rules],[dlls],[ALL_DLL_DIRS])
 WINE_CONFIG_MAKEFILE([dlls/mlang/tests/Makefile],[dlls/Maketest.rules],[dlls],[ALL_TEST_DIRS],[enable_tests])
 WINE_CONFIG_MAKEFILE([dlls/mmdevldr.vxd/Makefile],[dlls/Makedll.rules],[dlls],[ALL_DLL_DIRS],[enable_win16])
+WINE_CONFIG_MAKEFILE([dlls/mmsystem.dll16/Makefile],[dlls/Makedll.rules],[dlls],[ALL_DLL_DIRS],[enable_win16])
 WINE_CONFIG_MAKEFILE([dlls/monodebg.vxd/Makefile],[dlls/Makedll.rules],[dlls],[ALL_DLL_DIRS],[enable_win16])
 WINE_CONFIG_MAKEFILE([dlls/mountmgr.sys/Makefile],[dlls/Makedll.rules],[dlls],[ALL_DLL_DIRS])
 WINE_CONFIG_MAKEFILE([dlls/mouse.drv16/Makefile],[dlls/Makedll.rules],[dlls],[ALL_DLL_DIRS],[enable_win16])