diff --git a/run_docker b/run_docker
index 5f9f3209f..8159ca8e8 100755
--- a/run_docker
+++ b/run_docker
@@ -1,2 +1,2 @@
 #!/bin/sh
-docker run --rm -v $PWD:/src --user root -e NB_UID=$UID -e NB_GID+$GID -it iodide/pyodide:0.2.0 /bin/bash
+docker run --rm -v $PWD:/src --user root -e NB_UID=$UID -e NB_GID=$GID -it iodide/pyodide:0.2.0 /bin/bash