diff --git a/api/graphics_api.C b/api/graphics_api.C
index 318197d162..3559908cdc 100755
--- a/api/graphics_api.C
+++ b/api/graphics_api.C
@@ -208,11 +208,11 @@ bool throttled_app_render(int x, int y, double t) {
     //
     if (ok_to_render) {
         if (boinc_max_gfx_cpu_frac) {
-            boinc_thread_cpu_time(t0, m);
+            boinc_calling_thread_cpu_time(t0, m);
         }
         app_graphics_render(x, y, t);
         if (boinc_max_gfx_cpu_frac) {
-            boinc_thread_cpu_time(t1, m);
+            boinc_calling_thread_cpu_time(t1, m);
             total_render_time += t1 - t0;
         }
         return true;