diff --git a/bin/lint b/bin/lint
index 79837ac99..25b0ae2c1 100755
--- a/bin/lint
+++ b/bin/lint
@@ -13,7 +13,10 @@ targetbin=$rootdir/target/bin
 cd "$rootdir"
 
 exe=
-if [ "$(uname -o)" = Msys ]; then
+if [ "$(uname -s)" = Darwin ]; then
+  # Darwin's uname doesn't support the -o flag so we short circuit here.
+  :;
+elif [ "$(uname -o)" = Msys ]; then
   exe=.exe
 fi