diff --git a/include/common.hpp b/include/common.hpp
index 4d5f3c10..cb15413f 100644
--- a/include/common.hpp
+++ b/include/common.hpp
@@ -258,7 +258,6 @@ extern const std::string APP_EDITION;
 extern const std::string APP_EDITION_NAME;
 extern const std::string APP_VERSION_MAJOR;
 extern const std::string APP_VERSION;
-extern const std::string APP_OS;
 extern const std::string APP_ARCH;
 extern const std::string API_URL;
 
diff --git a/src/common.cpp b/src/common.cpp
index d6f0ba2d..4cac7aa9 100644
--- a/src/common.cpp
+++ b/src/common.cpp
@@ -20,19 +20,21 @@ const std::string APP_EDITION = "Free";
 const std::string APP_EDITION_NAME = "Free";
 const std::string APP_VERSION_MAJOR = "2";
 const std::string APP_VERSION = TOSTRING(_APP_VERSION);
+const std::string APP_ARCH =
 #if defined ARCH_WIN
-	const std::string APP_OS = "win";
-#elif ARCH_MAC
-	const std::string APP_OS = "mac";
+	"win"
+#elif defined ARCH_MAC
+	"mac"
 #elif defined ARCH_LIN
-	const std::string APP_OS = "lin";
+	"lin"
 #endif
+	"-"
 #if defined ARCH_X64
-	const std::string APP_ARCH = "x64";
-#endif
-#if defined ARCH_ARM64
-	const std::string APP_ARCH = "arm64";
+	"x64"
+#elif defined ARCH_ARM64
+	"arm64"
 #endif
+	;
 const std::string API_URL = "https://api.vcvrack.com";
 
 
diff --git a/src/library.cpp b/src/library.cpp
index 2e34eeee..de70e5c4 100644
--- a/src/library.cpp
+++ b/src/library.cpp
@@ -90,7 +90,7 @@ void checkAppUpdate() {
 
 	json_t* downloadUrlsJ = json_object_get(resJ, "downloadUrls");
 	if (downloadUrlsJ) {
-		json_t* downloadUrlJ = json_object_get(downloadUrlsJ, APP_OS.c_str());
+		json_t* downloadUrlJ = json_object_get(downloadUrlsJ, APP_ARCH.c_str());
 		if (downloadUrlJ)
 			appDownloadUrl = json_string_value(downloadUrlJ);
 	}
@@ -351,16 +351,16 @@ void syncUpdate(std::string slug) {
 	updateProgress = 0.f;
 	DEFER({updateProgress = 0.f;});
 
-	INFO("Downloading plugin %s v%s for %s", slug.c_str(), update.version.c_str(), APP_OS.c_str());
+	INFO("Downloading plugin %s v%s for %s", slug.c_str(), update.version.c_str(), APP_ARCH.c_str());
 
 	// Get download URL
 	std::string downloadUrl = API_URL + "/download";
 	downloadUrl += "?slug=" + network::encodeUrl(slug);
 	downloadUrl += "&version=" + network::encodeUrl(update.version);
-	downloadUrl += "&os=" + network::encodeUrl(APP_OS);
+	downloadUrl += "&os=" + network::encodeUrl(APP_ARCH);
 
 	// Get file path
-	std::string packageFilename = slug + "-" + update.version + "-" + APP_OS + ".vcvplugin";
+	std::string packageFilename = slug + "-" + update.version + "-" + APP_ARCH + ".vcvplugin";
 	std::string packagePath = system::join(plugin::pluginsPath, packageFilename);
 
 	// Download plugin package