diff --git a/samples/vboxwrapper/vboxwrapper.cpp b/samples/vboxwrapper/vboxwrapper.cpp
index 8f77f9ee30..b172b2ba3f 100644
--- a/samples/vboxwrapper/vboxwrapper.cpp
+++ b/samples/vboxwrapper/vboxwrapper.cpp
@@ -385,11 +385,6 @@ int main(int argc, char** argv) {
     vector<string> copy_to_shared;
     char buf[256];
 
-    memset(&boinc_options, 0, sizeof(boinc_options));
-    boinc_options.main_program = true;
-    boinc_options.check_heartbeat = true;
-    boinc_options.handle_process_control = true;
-    boinc_init_options(&boinc_options);
 
     for (int i=1; i<argc; i++) {
         if (!strcmp(argv[i], "--trickle")) {
@@ -423,6 +418,22 @@ int main(int argc, char** argv) {
     }
 #endif
 
+    memset(&boinc_options, 0, sizeof(boinc_options));
+    boinc_options.main_program = true;
+    boinc_options.check_heartbeat = true;
+    boinc_options.handle_process_control = true;
+
+    if (trickle_period > 0.0) {
+        fprintf(
+            stderr,
+            "%s Feature: Enabling trickle-ups (Interval: %f)\n",
+            vboxwrapper_msg_prefix(buf, sizeof(buf)), trickle_period
+        );
+        boinc_options.handle_trickle_ups = true;
+    }
+
+    boinc_init_options(&boinc_options);
+
     // Prepare environment for detecting system conditions
     //
     boinc_get_init_data_p(&aid);