diff --git a/platformio.ini b/platformio.ini
index e372b78..673298d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -34,7 +34,7 @@ lib_deps =
 board = ttgo-t-beam
 build_flags = ${env.build_flags} -DT_BEAM_V1_0
 
-[env:ttgo-t-beam_v0.7]
+[env:ttgo-t-beam-v0.7]
 board = ttgo-t-beam
 build_flags = ${env.build_flags} -DT_BEAM_V0_7