diff --git a/scripts/unixish-17.sh b/scripts/unixish-17.sh
index 0e9f59f..28b5208 100755
--- a/scripts/unixish-17.sh
+++ b/scripts/unixish-17.sh
@@ -19,7 +19,7 @@ _dl_path=
 _dl_url=
 
 case $RUNNER_OS in
-  Linux)
+  [Ll]inux)
     _os='linux'
     ;;
   macOS)
diff --git a/scripts/unixish.sh b/scripts/unixish.sh
index 73b4115..45345ac 100755
--- a/scripts/unixish.sh
+++ b/scripts/unixish.sh
@@ -17,7 +17,7 @@ _dl_path=
 _dl_url=
 
 case $RUNNER_OS in
-  Linux)
+  [Ll]inux)
     _os='linux'
     ;;
   macOS)