diff --git a/checkin_notes b/checkin_notes
index 7bc071e634..25e762da1f 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -3010,3 +3010,9 @@ David  16 May 2011
         boinc_api.cpp
     lib/
         Makefile.am
+
+David  18 May 2011
+    - update_versions: fix bug in version number parsing (from Kevin)
+
+    tools/
+        update_versions
diff --git a/tools/update_versions b/tools/update_versions
index 7d35c7cb35..9240cc43b9 100755
--- a/tools/update_versions
+++ b/tools/update_versions
@@ -249,7 +249,7 @@ function parse_version($v) {
     if (!is_numeric($x[0])) return -1;
     if (sizeof($x) > 1) {
         if (!is_numeric($x[1])) return -1;
-        return $x[0] + 100*$x[1];
+        return $x[1] + 100*$x[0];
     }
     return (int)$x[0];
 }