diff --git a/nexus/docker-compose.yml b/nexus/docker-compose.yml
index a5ac2a1..4b1d0ea 100644
--- a/nexus/docker-compose.yml
+++ b/nexus/docker-compose.yml
@@ -8,7 +8,7 @@ services:
       placement:
         constraints: [node.labels.hostname==bohr]
     environment:
-      INSTALL4J_ADD_VM_PARAMS=$INSTALL4J_ADD_VM_PARAMS
+      INSTALL4J_ADD_VM_PARAMS: -Xms128m -Xmx512m -XX:MaxDirectMemorySize=256m
     container_name: nexus3
     restart: always
     ports: