diff --git a/checkin_notes b/checkin_notes
index 3afac261dd..f7ba77342b 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -10112,5 +10112,6 @@ Bruce 10 Sept 2006
 
     lib/
         util.C
+        util.h
 
 
diff --git a/lib/util.h b/lib/util.h
index 1f05113b5c..c60a502946 100755
--- a/lib/util.h
+++ b/lib/util.h
@@ -133,6 +133,7 @@ extern int boinc_process_cpu_time(double& cpu);
 #endif
 
 extern void update_average(double, double, double, double&, double&);
+extern int update_credit_per_cpu_sec(double credit, double cpu_time, double& credit_per_cpu_sec);
 
 extern int boinc_calling_thread_cpu_time(double&);