diff --git a/checkin_notes b/checkin_notes
index 9ac01a6b98..1689bbadb2 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -4236,5 +4236,8 @@ Matt	2 May 2007
     html/ops/
         db_update.php
     
-
-
+Walt   2 May 2007
+    - Add cs_platform.C to Makefile.am
+          
+    client/
+        Makefile.am
diff --git a/client/Makefile.am b/client/Makefile.am
index 1370130ecb..7e4e6805a0 100644
--- a/client/Makefile.am
+++ b/client/Makefile.am
@@ -35,6 +35,7 @@ boinc_client_SOURCES = \
     cs_benchmark.C \
     cs_cmdline.C \
     cs_files.C \
+    cs_platforms.C \
     cs_prefs.C \
     cs_scheduler.C \
     cs_statefile.C \