diff --git a/presto/docker/docker-compose.java.yml b/presto/docker/docker-compose.java.yml
index 9eb0fb43..120f0234 100644
--- a/presto/docker/docker-compose.java.yml
+++ b/presto/docker/docker-compose.java.yml
@@ -5,7 +5,7 @@ services:
       service: presto-base-coordinator
     volumes:
       - ./config/generated/java/etc_common:/opt/presto-server/etc
-      - ./config/generated/java/etc_coordinator/config_java.properties:/opt/presto-server/etc/config.
+      - ./config/generated/java/etc_coordinator/config_java.properties:/opt/presto-server/etc/config.properties
       - ./config/generated/java/etc_coordinator/node.properties:/opt/presto-server/etc/node.properties
 
   presto-java-worker:
diff --git a/presto/scripts/generate_presto_config.sh b/presto/scripts/generate_presto_config.sh
index 85c8996e..eaf85a7b 100755
--- a/presto/scripts/generate_presto_config.sh
+++ b/presto/scripts/generate_presto_config.sh
@@ -97,6 +97,11 @@ EOF
     # optimizer.default-filter-factor-enabled=true
     COORD_CONFIG="${CONFIG_DIR}/etc_coordinator/config_native.properties"
     sed -i 's/\#optimizer/optimizer/g' ${COORD_CONFIG}
+  elif [[ "${VARIANT_TYPE}" == "java" ]]; then
+    # for Java variant, hard-wire the JVM heap sizes to 24GB
+    JVM_CONFIG="${CONFIG_DIR}/etc_common/jvm.config"
+    sed -i 's/Xmx.*G/Xmx24G/' ${JVM_CONFIG}
+    sed -i 's/Xms.*G/Xms24G/' ${JVM_CONFIG}
   fi
 
   # success message