diff --git a/package-lock.json b/package-lock.json
index 7c45366..196127b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@chelonia/cli",
-  "version": "2.2.2",
+  "version": "2.2.3",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@chelonia/cli",
-      "version": "2.2.2",
+      "version": "2.2.3",
       "hasInstallScript": true,
       "license": "AGPL-3.0",
       "dependencies": {
diff --git a/src/deploy.ts b/src/deploy.ts
index 985cb03..5baab4c 100644
--- a/src/deploy.ts
+++ b/src/deploy.ts
@@ -5,6 +5,10 @@
 import { path } from './deps.ts'
 import { upload } from './upload.ts'
 
+// Prefixes to use to select the correct CID to use
+const CONTRACT_TEXT_PREFIX = `t|`
+const CONTRACT_MANIFEST_PREFIX = `m|`
+
 export async function deploy (args: string[]) {
   const [urlOrDirOrSqliteFile, ...manifests] = args
   if (manifests.length === 0) throw new Error('missing url or manifests!')
@@ -13,11 +17,11 @@ export async function deploy (args: string[]) {
     const json = JSON.parse(Deno.readTextFileSync(manifestPath))
     const body = JSON.parse(json.body)
     const dirname = path.dirname(manifestPath)
-    toUpload.push('t|' + path.join(dirname, body.contract.file))
+    toUpload.push(CONTRACT_TEXT_PREFIX + path.join(dirname, body.contract.file))
     if (body.contractSlim) {
-      toUpload.push('t|' + path.join(dirname, body.contractSlim.file))
+      toUpload.push(CONTRACT_TEXT_PREFIX + path.join(dirname, body.contractSlim.file))
     }
-    toUpload.push('m|' + manifestPath)
+    toUpload.push(CONTRACT_MANIFEST_PREFIX + manifestPath)
   }
   await upload([urlOrDirOrSqliteFile, ...toUpload], true)
 }
diff --git a/src/upload.ts b/src/upload.ts
index 0721304..e96e3d6 100644
--- a/src/upload.ts
+++ b/src/upload.ts
@@ -17,7 +17,9 @@ export async function upload (args: string[], internal = false) {
   for (const filepath_ of files) {
     let type = multicodes.RAW
     let filepath = filepath_
-    if (filepath_[1] === '|') {
+    if (internal) {
+      // The `{type}|` prefix is used to determine which kind of CID is needed
+      if (filepath_[1] !== '|') throw new Error('Invalid path format')
       switch (filepath_[0]) {
         case 'r':
           // raw file type