diff --git a/metar/command.cfg b/metar/command.cfg
index ab2ef23..8a4b4f5 100644
--- a/metar/command.cfg
+++ b/metar/command.cfg
@@ -1,2 +1,3 @@
 level = 50
-cache = 300 #5 minutes
\ No newline at end of file
+cache = 300 #5 minutes
+mem_limit = 16
\ No newline at end of file