diff --git a/legacy/src/Service/ActivityMonitor.php b/legacy/src/Service/ActivityMonitor.php
index f983fb05..bc4afef2 100644
--- a/legacy/src/Service/ActivityMonitor.php
+++ b/legacy/src/Service/ActivityMonitor.php
@@ -685,6 +685,13 @@ private function getLogStream(Activity $activity, ProgressBar $bar)
     {
         $url = $activity->getLink('log');
 
+        // Strip any query string from the URL. The log link can inherit query
+        // parameters (such as "count") from the base activities collection
+        // URL, and those are rejected by the log endpoint with HTTP 400.
+        if (($queryPos = \strpos($url, '?')) !== false) {
+            $url = \substr($url, 0, $queryPos);
+        }
+
         // Try fetching the stream with a 10 second timeout per call, and a .5
         // second interval between calls, for up to 2 minutes.
         $readTimeout = 10;
@@ -705,7 +712,7 @@ private function getLogStream(Activity $activity, ProgressBar $bar)
                 throw new \RuntimeException('Failed to open activity log stream: ' . $url);
             }
             $bar->advance();
-            \usleep((int) $interval * 1000000);
+            \usleep((int) ($interval * 1000000));
             $bar->advance();
             $stream = \fopen($url, 'r', false, $this->api->getStreamContext($readTimeout));
         }