diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index 167d1d81..afb36223 100755
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -93,6 +93,11 @@ if [ -n "$CUSTOM_SQLITE_EXTENSIONS_PATH" ]; then
 	fi
 fi
 
+fk_flag=""
+if [ -n "$ENABLE_FK" ]; then
+	fk_flag="-fk"
+fi
+
 # When running on Kubernetes, delay a small time so DNS records
 # are configured across the cluster when this rqlited comes up. Because
 # rqlite does node-discovery using a headless service, it must have
@@ -109,7 +114,7 @@ fi
 [ -n "$START_DELAY" ] && sleep "$START_DELAY"
 
 RQLITED=/bin/rqlited
-rqlited_commands="$RQLITED $node_id $http_addr $http_adv_addr $raft_addr $raft_adv_addr $extensions_path_flag"
+rqlited_commands="$RQLITED $node_id $http_addr $http_adv_addr $raft_addr $raft_adv_addr $extensions_path_flag $fk_flag"
 
 data_dir="${DATA_DIR:-/rqlite/file/data}"