diff --git a/packages/tailwindcss-language-service/src/util/find.test.ts b/packages/tailwindcss-language-service/src/util/find.test.ts
index bdc25fe6..fa35a389 100644
--- a/packages/tailwindcss-language-service/src/util/find.test.ts
+++ b/packages/tailwindcss-language-service/src/util/find.test.ts
@@ -1102,6 +1102,41 @@ test('Helper functions can start with --', async ({ expect }) => {
   ])
 })
 
+test('Helper functions can span multiple lines', async ({ expect }) => {
+  let file = createDocument({
+    name: 'file.css',
+    lang: 'css',
+    content: `
+      .a {
+        color: theme(
+          'colors.red.500'
+        );
+      }
+      .b {
+        color: theme(
+          'colors.red.500',
+          red
+        );
+      }
+    `,
+  })
+
+  let fns = findHelperFunctionsInDocument(file.state, file.doc)
+
+  expect(fns).toEqual([
+    {
+      helper: 'theme',
+      path: 'colors.red.500',
+      ranges: { full: range(2, 21, 4, 8), path: range(3, 11, 3, 25) },
+    },
+    {
+      helper: 'theme',
+      path: 'colors.red.500',
+      ranges: { full: range(7, 21, 10, 8), path: range(8, 11, 8, 25) },
+    },
+  ])
+})
+
 test('Can find helper functions in SCSS', async ({ expect }) => {
   let file = createDocument({
     name: 'file.scss',
diff --git a/packages/tailwindcss-language-service/src/util/find.ts b/packages/tailwindcss-language-service/src/util/find.ts
index f02fe493..e0ac2781 100644
--- a/packages/tailwindcss-language-service/src/util/find.ts
+++ b/packages/tailwindcss-language-service/src/util/find.ts
@@ -509,12 +509,12 @@ export function findHelperFunctionsInRange(
     let path = text.slice(pathStart, pathEnd)
 
     // Skip leading/trailing whitespace
-    pathStart += path.match(/^\s+/)?.length ?? 0
-    pathEnd -= path.match(/\s+$/)?.length ?? 0
+    pathStart += path.match(/^\s+/)?.[0].length ?? 0
+    pathEnd -= path.match(/\s+$/)?.[0].length ?? 0
 
     // Skip leading/trailing quotes
-    let quoteStart = path.match(/^['"]+/)?.length ?? 0
-    let quoteEnd = path.match(/['"]+$/)?.length ?? 0
+    let quoteStart = path.match(/^['"]+/)?.[0].length ?? 0
+    let quoteEnd = path.match(/['"]+$/)?.[0].length ?? 0
 
     if (quoteStart && quoteEnd) {
       pathStart += quoteStart
@@ -542,15 +542,15 @@ export function findHelperFunctionsInRange(
     // Skip leading/trailing whitespace
     //
     // This can happen if we've clipped the path down to before the `/`
-    pathStart += path.match(/^\s+/)?.length ?? 0
-    pathEnd -= path.match(/\s+$/)?.length ?? 0
+    pathStart += path.match(/^\s+/)?.[0].length ?? 0
+    pathEnd -= path.match(/\s+$/)?.[0].length ?? 0
 
     // Re-slice
     path = text.slice(pathStart, pathEnd)
 
     // Skip leading/trailing quotes
-    quoteStart = path.match(/^['"]+/)?.length ?? 0
-    quoteEnd = path.match(/['"]+$/)?.length ?? 0
+    quoteStart = path.match(/^['"]+/)?.[0].length ?? 0
+    quoteEnd = path.match(/['"]+$/)?.[0].length ?? 0
 
     pathStart += quoteStart
     pathEnd -= quoteEnd
diff --git a/packages/vscode-tailwindcss/CHANGELOG.md b/packages/vscode-tailwindcss/CHANGELOG.md
index 8e9edb95..d7c39a8a 100644
--- a/packages/vscode-tailwindcss/CHANGELOG.md
+++ b/packages/vscode-tailwindcss/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## Prerelease
 
-- Nothing yet!
+- Fix incorrect `invalidConfigPath` warnings when a `theme(…)` or `config(…)` call spans multiple lines ([#1606](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1606))
 
 ## 0.16.0