diff --git a/core/autocomplete/prefiltering/index.ts b/core/autocomplete/prefiltering/index.ts
index b322b9e223c..9677e07e444 100644
--- a/core/autocomplete/prefiltering/index.ts
+++ b/core/autocomplete/prefiltering/index.ts
@@ -48,8 +48,11 @@ export async function shouldPrefilter(
     return true;
   }
 
-  // Check whether we're in the continue config.json file
-  if (helper.filepath === getConfigJsonPath()) {
+  // Check whether we're in the continue config.json or config.yaml file
+  if (
+    helper.filepath === getConfigJsonPath() ||
+    helper.filepath === getConfigJsonPath().replace(/\.json$/, ".yaml")
+  ) {
     return true;
   }
 
diff --git a/core/autocomplete/prefiltering/prefiltering.vitest.ts b/core/autocomplete/prefiltering/prefiltering.vitest.ts
new file mode 100644
index 00000000000..b71294471dd
--- /dev/null
+++ b/core/autocomplete/prefiltering/prefiltering.vitest.ts
@@ -0,0 +1,50 @@
+import { describe, expect, it, vi } from "vitest";
+
+import { IDE } from "../..";
+import { shouldPrefilter } from ".";
+import { getConfigJsonPath } from "../../util/paths";
+import { HelperVars } from "../util/HelperVars";
+import { AutocompleteLanguageInfo } from "../constants/AutocompleteLanguageInfo";
+
+describe("shouldPrefilter", () => {
+  const mockLanguage: AutocompleteLanguageInfo = {
+    name: "TypeScript",
+    topLevelKeywords: [],
+    singleLineComment: "//",
+    endOfLine: [";"],
+  };
+
+  const mockIde: IDE = {
+    getWorkspaceDirs: vi.fn().mockResolvedValue([]),
+  } as unknown as IDE;
+
+  function createMockHelper(filepath: string): HelperVars {
+    return {
+      filepath,
+      pos: { line: 0, character: 0 },
+      fileContents: "test content",
+      fileLines: ["test content"],
+      lang: mockLanguage,
+      options: {},
+    } as unknown as HelperVars;
+  }
+
+  it("returns true when helper.filepath matches getConfigJsonPath()", async () => {
+    const helper = createMockHelper(getConfigJsonPath());
+    const result = await shouldPrefilter(helper, mockIde);
+    expect(result).toBe(true);
+  });
+
+  it("returns true when helper.filepath matches config.yaml path", async () => {
+    const yamlPath = getConfigJsonPath().replace(/\.json$/, ".yaml");
+    const helper = createMockHelper(yamlPath);
+    const result = await shouldPrefilter(helper, mockIde);
+    expect(result).toBe(true);
+  });
+
+  it("returns false for a normal file path", async () => {
+    const helper = createMockHelper("file:///home/user/project/main.ts");
+    const result = await shouldPrefilter(helper, mockIde);
+    expect(result).toBe(false);
+  });
+});