diff --git a/api/api.C b/api/api.C
index e1d909aaf1..17ba53fcaf 100644
--- a/api/api.C
+++ b/api/api.C
@@ -267,7 +267,7 @@ int boinc_resolve_link(char *file_name, char *resolved_name)
     return 0;
 }
 
-bool checkpoint = false;
+bool _checkpoint = false;
 
 double get_cpu_time() {
     int retval, pid = getpid();
@@ -299,12 +299,12 @@ int checkpoint_completed() {
 	fprintf(stderr, "error: could not close %s\n", APP_TO_CORE_FILE);
 	return retval;
     }
-    checkpoint = false;
+    _checkpoint = false;
     return 0;
 }
 
 void on_timer(int a) {
-    checkpoint = true;
+    _checkpoint = true;
 }
 
 int set_timer(int period) {
diff --git a/api/api.h b/api/api.h
index 6036e6c184..7fb5c82edb 100644
--- a/api/api.h
+++ b/api/api.h
@@ -96,8 +96,8 @@ int boinc_resolve_link(char *file_name, char *resolved_name);
 #define BOINC_INIT_FILE     "boinc_init.xml"
 
 //the following are provided for implementation of the checkpoint system
-extern bool checkpoint;
-#define time_to_checkpoint() checkpoint
+extern bool _checkpoint;
+#define time_to_checkpoint() _checkpoint
 int checkpoint_completed();
 int set_timer(int period); //period is seconds spent in process
 void on_timer(int not_used);
diff --git a/apps/upper_case.C b/apps/upper_case.C
index 5f2e5f409e..ef252738dd 100755
--- a/apps/upper_case.C
+++ b/apps/upper_case.C
@@ -37,6 +37,10 @@ int main() {
         c = toupper(c);
         putchar(c);
         n++;
+        if(time_to_checkpoint()) {
+	    fflush(stdout);
+	    checkpoint_completed();
+        }
     }
     fprintf(stderr, "APP: upper_case ending, wrote %d chars\n", n);
     return 0;
diff --git a/test/prefs1.xml b/test/prefs1.xml
index b85e995a71..7cad08a019 100644
--- a/test/prefs1.xml
+++ b/test/prefs1.xml
@@ -4,7 +4,7 @@
     <low_water_days>1</low_water_days>
     <resource_share>1</resource_share>
     <project>
-        <master_url>http://localhost/boinc-cgi/index.html</master_url>
+        <master_url>http://localhost/index.html</master_url>
         <authenticator>3f7b90793a0175ad0bda68684e8bd136</authenticator>
     </project>
 </preferences>