diff --git a/admin/osx/mac-crafter/Sources/Utils/Library.swift b/admin/osx/mac-crafter/Sources/Utils/Library.swift
new file mode 100644
index 0000000000..1304f03281
--- /dev/null
+++ b/admin/osx/mac-crafter/Sources/Utils/Library.swift
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2024 by Claudio Cambra <claudio.cambra@nextcloud.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+import Foundation
+
+func isLibrary(_ path: String) -> Bool {
+    path.hasSuffix(".dylib") || path.hasSuffix(".framework")
+}
diff --git a/admin/osx/mac-crafter/Sources/main.swift b/admin/osx/mac-crafter/Sources/main.swift
index aed68631f5..a1eb85165a 100644
--- a/admin/osx/mac-crafter/Sources/main.swift
+++ b/admin/osx/mac-crafter/Sources/main.swift
@@ -73,9 +73,8 @@ struct MacCrafter: ParsableCommand {
         let craftLibDir = "\(currentDir)/\(craftTarget)/lib"
         let craftLibs = try fm.contentsOfDirectory(atPath: craftLibDir)
         for lib in craftLibs {
-            let libPath = "\(craftLibDir)/\(lib)"
-            guard lib.hasSuffix(".dylib") || lib.hasSuffix(".framework") else { continue }
-            try codesign(identity: codeSignIdentity, path: libPath)
+            guard isLibrary(lib) else { continue }
+            try codesign(identity: codeSignIdentity, path: "\(craftLibDir)/\(lib)")
         }
 
         let craftPluginsDir = "\(currentDir)/\(craftTarget)/plugins"
@@ -84,9 +83,8 @@ struct MacCrafter: ParsableCommand {
         }
 
         for case let plugin as String in craftPluginsEnumerator {
-            let pluginPath = "\(craftPluginsDir)/\(plugin)"
-            guard plugin.hasSuffix(".dylib") || plugin.hasSuffix(".framework") else { continue }
-            try codesign(identity: codeSignIdentity, path: pluginPath)
+            guard isLibrary(plugin) else { continue }
+            try codesign(identity: codeSignIdentity, path: "\(craftPluginsDir)/\(plugin)")
         }
 
         print("Crafting Nextcloud Desktop Client...")