diff --git a/exercises/sec_groups.sh b/exercises/sec_groups.sh
index b73afdf..6b67291 100755
--- a/exercises/sec_groups.sh
+++ b/exercises/sec_groups.sh
@@ -9,7 +9,7 @@
 echo "*********************************************************************"
 
 # This script exits on an error so that errors don't compound and you see
-# only the first error that occured.
+# only the first error that occurred.
 set -o errexit
 
 # Print the commands being run so that we can see the command that triggers