diff --git a/_data/rules.yml b/_data/rules.yml
index d88fae5..1a9fe81 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -108,7 +108,7 @@ services:
             severity: warning
           - name: Container Memory usage
             description: Container Memory usage is above 80%
-            query: "(sum(container_memory_usage_bytes) BY (instance) / sum(container_memory_max_usage_bytes) BY (instance) * 100) > 80"
+            query: "(sum(container_memory_usage_bytes) BY (instance, name) / sum(container_spec_memory_limit_bytes) BY (instance, name) * 100) > 80"
             severity: warning
           - name: Container Volume usage
             description: Container Volume usage is above 80%