diff --git a/plugins/plugin-sass/plugin.js b/plugins/plugin-sass/plugin.js
index aec0f6f88f..ca1f8a758b 100644
--- a/plugins/plugin-sass/plugin.js
+++ b/plugins/plugin-sass/plugin.js
@@ -175,7 +175,7 @@ module.exports = function sassPlugin(snowpackConfig, {native, compilerOptions =
           }
           case 'string':
           case 'number': {
-            if (flagName === 'loadPath') {
+            if (flagName === 'load-path') {
               loadPaths.add(value); // don’t add these until default load paths are collected
             } else {
               args.push(`--${flagName}=${value}`);