diff --git a/gum/backend-linux/gumprocess-linux.c b/gum/backend-linux/gumprocess-linux.c
index effbc76a2..b07240c37 100644
--- a/gum/backend-linux/gumprocess-linux.c
+++ b/gum/backend-linux/gumprocess-linux.c
@@ -688,9 +688,11 @@ _gum_process_enumerate_threads (GumFoundThreadFunc func,
 
     if (gum_thread_read_state (details.id, &details.state))
     {
-      gum_stalker_run_on_thread_sync (stalker, details.id, gum_store_context,
-          &details);
-      carry_on = func (&details, user_data);
+      if (gum_stalker_run_on_thread_sync (stalker, details.id,
+          gum_store_context, &details))
+      {
+        carry_on = func (&details, user_data);
+      }
     }
 
     g_free (thread_name);
@@ -751,7 +753,7 @@ gum_store_user_time (guint64 * user_time)
   if (getrusage(RUSAGE_THREAD, &usage) == 0)
   {
     result = usage.ru_utime.tv_sec;
-    result *= 100000;
+    result *= 1000000;
     result += usage.ru_utime.tv_usec;
   }
 #endif