diff --git a/tools/tsp-client/CHANGELOG.md b/tools/tsp-client/CHANGELOG.md
index b560c89d7..8fb9d201f 100644
--- a/tools/tsp-client/CHANGELOG.md
+++ b/tools/tsp-client/CHANGELOG.md
@@ -6,7 +6,8 @@
 - Use `resolveCompilerOptions` to get emitter configurations from tspconfig.yaml.
 - Remove unused functions: `getEmitterOptions()`, `resolveCliOptions()`, `resolveImports()`.
 - Fix `additionalDirectories` property outputted by the `init` command.
-- Fixed support for local specs using additional directories.
+- Fixed support for local and remote specs using additional directories.
+- Switched to use path helper functions from `@typespec/compiler`.
 
 ## 2023-12-8 - 0.2.0
 
diff --git a/tools/tsp-client/src/index.ts b/tools/tsp-client/src/index.ts
index 0432f8aaf..30a8fb415 100644
--- a/tools/tsp-client/src/index.ts
+++ b/tools/tsp-client/src/index.ts
@@ -7,8 +7,8 @@ import { mkdir, writeFile, cp, readFile } from "node:fs/promises";
 import { addSpecFiles, checkoutCommit, cloneRepo, getRepoRoot, sparseCheckout } from "./git.js";
 import { fetch } from "./network.js";
 import { parse as parseYaml } from "yaml";
-import { joinPaths, normalizeSlashes, resolvePath } from "@typespec/compiler";
-import { formatAdditionalDirectories } from "./utils.js";
+import { joinPaths, resolvePath } from "@typespec/compiler";
+import { formatAdditionalDirectories, getAdditionalDirectoryName } from "./utils.js";
 
 
 async function sdkInit(
@@ -116,16 +116,8 @@ async function syncTspFiles(outputDir: string, localSpecRepo?: string) {
       throw new Error("Could not find local spec repo root, please make sure the path is correct");
     }
     for (const dir of tspLocation.additionalDirectories!) {
-      Logger.info(`Syncing additional directory: ${dir}`);
-      let normalizedDir = normalizeSlashes(dir);
-      if (normalizedDir.slice(-1) === "/") {
-        normalizedDir = normalizedDir.slice(0, -1);
-      }
-      const finalDirName = normalizedDir.split("/").pop();
-      if (!finalDirName) {
-        throw new Error(`Could not find a final directory for the following value: ${normalizedDir}`);
-      }
-      await cp(joinPaths(localSpecRepoRoot, dir), joinPaths(tempRoot, finalDirName), { recursive: true, filter: filter });
+      Logger.info(`Syncing additional directory: ${dir}`);;
+      await cp(joinPaths(localSpecRepoRoot, dir), joinPaths(tempRoot, getAdditionalDirectoryName(dir)), { recursive: true, filter: filter });
     }
   } else {
     const cloneDir = joinPaths(repoRoot, "..", "sparse-spec");
@@ -142,10 +134,8 @@ async function syncTspFiles(outputDir: string, localSpecRepo?: string) {
     await checkoutCommit(cloneDir, tspLocation.commit);
     await cp(joinPaths(cloneDir, tspLocation.directory), srcDir, { recursive: true });
     for (const dir of tspLocation.additionalDirectories!) {
-      const dirSplit = dir.split("/");
-      let projectName = dirSplit[dirSplit.length - 1];
-      const dirName = joinPaths(tempRoot, projectName!);
-      await cp(joinPaths(cloneDir, dir), dirName, { recursive: true });
+      Logger.info(`Syncing additional directory: ${dir}`);
+      await cp(joinPaths(cloneDir, dir), joinPaths(tempRoot, getAdditionalDirectoryName(dir)), { recursive: true });
     }
     Logger.debug(`Removing sparse-checkout directory ${cloneDir}`);
     await removeDirectory(cloneDir);
diff --git a/tools/tsp-client/src/utils.ts b/tools/tsp-client/src/utils.ts
index 3abf8dcfb..32d021c32 100644
--- a/tools/tsp-client/src/utils.ts
+++ b/tools/tsp-client/src/utils.ts
@@ -1,3 +1,5 @@
+import { normalizeSlashes } from "@typespec/compiler";
+
 export function formatAdditionalDirectories(additionalDirectories?: string[]): string {
     let additionalDirOutput = "";
     for (const dir of additionalDirectories ?? []) {
@@ -5,3 +7,15 @@ export function formatAdditionalDirectories(additionalDirectories?: string[]): s
     }
     return additionalDirOutput;
 }
+
+export function getAdditionalDirectoryName(dir: string): string {
+    let normalizedDir = normalizeSlashes(dir);
+    if (normalizedDir.slice(-1) === "/") {
+        normalizedDir = normalizedDir.slice(0, -1);
+    }
+    const finalDirName = normalizedDir.split("/").pop();
+    if (!finalDirName) {
+        throw new Error(`Could not find a final directory for the following value: ${normalizedDir}`);
+    }
+    return finalDirName;
+}