diff --git a/checkin_notes b/checkin_notes
index 49b9582f14..8d0fd68973 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -2819,3 +2819,10 @@ David  6 May 2011
         make_project
     samples/wrapper/
         wrapper.cpp
+
+Charlie 7 May 2011
+    - Win: add missing procinfo.cpp to Windows libboinc project.
+
+    win_build/
+        boinc_cli.vcproj
+        libboinc.vcproj
diff --git a/win_build/libboinc.vcproj b/win_build/libboinc.vcproj
index 0650d7d245..6605bddb11 100644
--- a/win_build/libboinc.vcproj
+++ b/win_build/libboinc.vcproj
@@ -1016,6 +1016,10 @@
 				RelativePath="..\lib\procinfo.cpp"
 				>
 			</File>
+			<File
+				RelativePath="..\lib\procinfo_win.cpp"
+				>
+			</File>
 			<File
 				RelativePath="..\lib\proxy_info.cpp"
 				>