diff --git a/hosts/tyo0/services/prometheus.nix b/hosts/tyo0/services/prometheus.nix
index 813e980..3b8046a 100644
--- a/hosts/tyo0/services/prometheus.nix
+++ b/hosts/tyo0/services/prometheus.nix
@@ -98,6 +98,7 @@
             {
               alert = "MemoryFull";
               expr = ''node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes < 0.1'';
+              for = "5m";
             }
             {
               alert = "DiskFull";