diff --git a/src/loaders/postcss/import/index.ts b/src/loaders/postcss/import/index.ts
index 95a28fc9..24114aee 100644
--- a/src/loaders/postcss/import/index.ts
+++ b/src/loaders/postcss/import/index.ts
@@ -88,7 +88,7 @@ const plugin: PluginCreator<ImportOptions> = (options = {}) => {
 
         // Resolve aliases
         for (const [from, to] of Object.entries(alias)) {
-          if (!url.startsWith(from)) continue;
+          if (url !== from && !url.startsWith(`${from}/`)) continue;
           url = normalizePath(to) + url.slice(from.length);
         }
 
diff --git a/src/loaders/postcss/url/index.ts b/src/loaders/postcss/url/index.ts
index 10da1b96..7620141d 100644
--- a/src/loaders/postcss/url/index.ts
+++ b/src/loaders/postcss/url/index.ts
@@ -96,7 +96,7 @@ const plugin: PluginCreator<UrlOptions> = (options = {}) => {
         walkUrls(parsed, (url, node) => {
           // Resolve aliases
           for (const [from, to] of Object.entries(alias)) {
-            if (!url.startsWith(from)) continue;
+            if (url !== from && !url.startsWith(`${from}/`)) continue;
             url = normalizePath(to) + url.slice(from.length);
           }