From 2edc6b363d39e94789dd42358361d9c22d05b727 Mon Sep 17 00:00:00 2001
From: Kevin Hester <kevinh@geeksville.com>
Date: Sun, 27 Dec 2020 12:53:23 +0800
Subject: [PATCH] fix #587 thanks @cronyx

---
 bin/platformio-custom.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/platformio-custom.py b/bin/platformio-custom.py
index ec9dd4545..265158f75 100644
--- a/bin/platformio-custom.py
+++ b/bin/platformio-custom.py
@@ -12,5 +12,5 @@ print("Using meshtastic platform-custom.py, firmare version " + verStr)
 
 # General options that are passed to the C and C++ compilers
 projenv.Append(CCFLAGS=[
-    f"-DAPP_VERSION={verStr}"
+    "-DAPP_VERSION=" + verStr
     ])