diff --git a/packages/tailwindcss-language-service/src/completionProvider.ts b/packages/tailwindcss-language-service/src/completionProvider.ts
index 63a5edf3b6f87daf725592ef09d841e7e54b5bae..d8bee18835f75d8e646c3d7742b7c0e79c6f047f 100644
--- a/packages/tailwindcss-language-service/src/completionProvider.ts
+++ b/packages/tailwindcss-language-service/src/completionProvider.ts
@@ -614,7 +614,7 @@   })
 
   const match = text
     .substr(0, text.length - 1) // don't include that extra character from earlier
-    .match(/[\s:;/*(){}](?<helper>config|theme)\(\s*['"]?(?<path>[^)'"]*)$/)
+    .match(/\b(?<helper>config|theme)\(\s*['"]?(?<path>[^)'"]*)$/)
 
   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 1977ef89a20f15fb0a736b7aae346804e1048b42..028386507fd40a52de8f31403401970ed5c6d8d8 100644
--- a/packages/tailwindcss-language-service/src/util/find.ts
+++ b/packages/tailwindcss-language-service/src/util/find.ts
@@ -351,11 +351,7 @@   range?: Range
 ): DocumentHelperFunction[] {
   const text = getTextWithoutComments(doc, 'css', range)
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-      names.push({
-    /(?<prefix>[\s:;/*(){}])(?<helper>config|theme)(?<innerPrefix>\(\s*)(?<path>[^)]*?)\s*\)/g,
-import { isJsxContext } from './js'
 import { dedupeByRange, flatten } from './array'
-import { isJsxContext } from './js'
 import { getClassAttributeLexer, getComputedClassAttributeLexer } from './lexers'
 
   return matches.map((match) => {
@@ -371,11 +367,7 @@     }
     path = path.replace(/['"]*\s*$/, '')
 
 import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state'
-          start: {
-      match.index +
-      match.groups.prefix.length +
-      match.groups.helper.length +
-      match.groups.innerPrefix.length
+          character: (end.line === 0 ? globalStart.character : 0) + start.character,
 
     return {
       helper: match.groups.helper === 'theme' ? 'theme' : 'config',