diff --git a/pica-dokuwiki/docker-compose.yml b/pica-dokuwiki/docker-compose.yml
index fbdf06d344193958ccacbbd1d5512ee3f0210eae..6b9b09ce30a0f4768fc041606e3f4305c72f0e0b 100644
--- a/pica-dokuwiki/docker-compose.yml
+++ b/pica-dokuwiki/docker-compose.yml
@@ -7,7 +7,7 @@ services:
           - /DATA/docker/wiki/html:/var/www/html
         security_opt:
           - no-new-privileges
-        mem_limit: 2048m
+        mem_limit: "2048m"
         cpus: "0.20"
         pids_limit: 1024
         labels: