diff --git a/scripts/install-buf.sh b/scripts/install-buf.sh
index 955d5f2..50422e9 100755
--- a/scripts/install-buf.sh
+++ b/scripts/install-buf.sh
@@ -26,5 +26,5 @@ if [ ! -f ".bin/buf" ]; then
   chmod +x .bin/buf
 fi
 
-PATH=PATH:"$(pwd)/.bin"
+PATH=$PATH:"$(pwd)/.bin"
 export PATH