diff --git a/Ignore.md b/Ignore.md
index 2dd15ed..a52294b 100644
--- a/Ignore.md
+++ b/Ignore.md
@@ -61,7 +61,7 @@ export SHELLCHECK_OPTS="-e SC2059 -e SC2034 -e SC1090"
 and then pass it to Docker:
 
 ```sh
-docker run -e SHELLCHECK_OPTS="$SHELLCHECK_OPTS" -v "$PWD:/mnt" koalaman/shellcheck myscript
+docker run -e SHELLCHECK_OPTS -v "$PWD:/mnt" koalaman/shellcheck myscript
 ```
 
 ### Ignoring all instances in a file (0.4.4+)