diff --git a/pkgs/applications/networking/cluster/flink/default.nix b/pkgs/applications/networking/cluster/flink/default.nix
index f0547dcf5609..70c70d9ead43 100644
--- a/pkgs/applications/networking/cluster/flink/default.nix
+++ b/pkgs/applications/networking/cluster/flink/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
       --prefix PATH : ${jre}/bin
 
     cat <<EOF >> $out/opt/flink/conf/flink-conf.yaml
-    env.java.home: ${jre}"
+    env.java.home: ${jre}
     env.log.dir: /tmp/flink-logs
     EOF
   '';