diff --git a/checkin_notes b/checkin_notes
index 518ca36231..84fcba1633 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -1,3 +1,4 @@
+
 David  3 Jan 2010
     - client: ATI available RAM wasn't being detected correctly
 
@@ -595,3 +596,10 @@ Charlie  21 Jan 2010
         DlgEventLogListCtrl.cpp, .h
         mac/
             MacAccessiblity.cpp, .h
+
+Bernd 21 Jan 2010
+    - lib: Updated Makefile.mingw to include coproc.cpp/h
+
+    lib/
+        Makefile.mingw
+
diff --git a/lib/Makefile.mingw b/lib/Makefile.mingw
index a2d34fb2b8..799d380637 100644
--- a/lib/Makefile.mingw
+++ b/lib/Makefile.mingw
@@ -11,7 +11,7 @@ BOINC_SRC ?= ..
 HEADERS = version.h api/boinc_api.h api/graphics2.h lib/app_ipc.h lib/boinc_win.h lib/url.h \
 	lib/common_defs.h lib/diagnostics.h lib/diagnostics_win.h lib/filesys.h lib/hostinfo.h \
 	lib/proxy_info.h lib/prefs.h lib/miofile.h lib/mfile.h lib/parse.h lib/util.h \
-	win_build/config.h
+	lib/coproc.h lib/cal.h win_build/config.h
 
 ZIP_HEADERS = zip/boinc_zip.h
 
@@ -23,7 +23,7 @@ GPH_OBJ = graphics2.o graphics2_util.o
 
 LIB_OBJ = util.o win_util.o app_ipc.o diagnostics.o diagnostics_win.o filesys.o \
 	hostinfo.o md5.o md5_file.o mem_usage.o mfile.o miofile.o parse.o prefs.o \
-	proxy_info.o str_util.o shmem.o base64.o stackwalker_win.o url.o
+	proxy_info.o str_util.o shmem.o base64.o stackwalker_win.o url.o coproc.o
 
 ZIP_OBJ = boinc_zip.o z_win32.o win32zip.o zipup.o zipfile.o zip.o z_globals.o z_fileio.o \
 	z_util.o trees.o deflate.o zipinfo.o win32.o unzip.o unshrink.o unreduce.o ttyio.o \