diff --git a/scripts/build b/scripts/build
index d9d000b349..1fc8266155 100755
--- a/scripts/build
+++ b/scripts/build
@@ -10,10 +10,10 @@ rm -rf build
 mkdir build
 
 echo "Compiling with TypeScript"
-$npm_bin/tsc
+"$npm_bin"/tsc
 
 echo "Building GraphiQL"
-(cd src/postgraphql/graphiql && $npm_bin/react-scripts build)
+(cd src/postgraphql/graphiql && "$npm_bin"/react-scripts build)
 
 echo "Moving GraphiQL build output"
 mkdir -p build/postgraphql/graphiql/public