diff --git a/packages/tailwindcss-language-service/src/completionProvider.ts b/packages/tailwindcss-language-service/src/completionProvider.ts
index b9b87aa..f7655a0 100644
--- a/packages/tailwindcss-language-service/src/completionProvider.ts
+++ b/packages/tailwindcss-language-service/src/completionProvider.ts
@@ -159,7 +159,10 @@ function provideClassAttributeCompletions(
     end: position,
   })
 
-  const match = findLast(/(?:\s|:)(?:class(?:Name)?|\[ngClass\])=['"`{]/gi, str)
+  const match = findLast(
+    /(?:\s|:|\()(?:class(?:Name)?|\[ngClass\])=['"`{]/gi,
+    str
+  )
 
   if (match === null) {
     return null
diff --git a/packages/tailwindcss-language-service/src/util/find.ts b/packages/tailwindcss-language-service/src/util/find.ts
index a680d8c..96a9606 100644
--- a/packages/tailwindcss-language-service/src/util/find.ts
+++ b/packages/tailwindcss-language-service/src/util/find.ts
@@ -209,7 +209,7 @@ export function findClassListsInHtmlRange(
 ): DocumentClassList[] {
   const text = doc.getText(range)
   const matches = findAll(
-    /(?:\s|:)(?:class(?:Name)?|\[ngClass\])=['"`{]/g,
+    /(?:\s|:|\()(?:class(?:Name)?|\[ngClass\])=['"`{]/g,
     text
   )
   const result: DocumentClassList[] = []