diff --git a/roles/common/tasks/system.yml b/roles/common/tasks/system.yml
index 21aa3df..5e54ebf 100644
--- a/roles/common/tasks/system.yml
+++ b/roles/common/tasks/system.yml
@@ -95,7 +95,7 @@
     name: fstrim
     special_time: "{{ system_fstrim_freq }}"
     user: root
-    job: 'sleep $(( 1$(/bin/date +\%N) \% 300 )); /usr/bin/systemd-cat /usr/local/bin/fstrim_all'
+    job: 'sleep $(( 3600 + 1$(/bin/date +\%N) \% 7200 )); /usr/bin/systemd-cat /usr/local/bin/fstrim_all'
     cron_file: fstrim
     state: "{{ (ansible_virtualization_role == 'guest' and ansible_virtualization_type == 'lxc') | ternary('absent','present') }}"