diff --git a/ESP32_AP-Flasher/platformio.ini b/ESP32_AP-Flasher/platformio.ini
index b7cd9bb3..d24eff3e 100644
--- a/ESP32_AP-Flasher/platformio.ini
+++ b/ESP32_AP-Flasher/platformio.ini
@@ -30,7 +30,7 @@ board_build.f_cpu = 240000000L
 ;monitor_port = COM30
 
 
-[env:OpenEPaperLink Mini AP]
+[env:OpenEPaperLink_Mini_AP]
 platform = https://github.com/platformio/platform-espressif32.git
 board=lolin_s2_mini
 board_build.partitions = default.csv
@@ -70,7 +70,7 @@ board_upload.flash_size = 4MB
 ; !!! this configuration expects the 16MB Flash / 8MB Ram version of the ESP32-S3-DevkitC1
 ; 
 ; ----------------------------------------------------------------------------------------
-[env:OpenEPaperLink AP and Flasher]
+[env:OpenEPaperLink_AP_and_Flasher]
 platform = https://github.com/platformio/platform-espressif32.git
 board = esp32-s3-devkitc-1
 board_build.partitions = default_16MB.csv
@@ -126,7 +126,7 @@ board_upload.maximum_size = 16777216
 board_upload.maximum_ram_size = 327680
 board_upload.flash_size = 16MB
 
-[env:Simple AP]
+[env:Simple_AP]
 board = esp32dev
 board_build.partitions = no_ota.csv
 
@@ -154,7 +154,7 @@ build_src_filter =
 ; !!! this configuration expects the alternative 2.9" Flasher PCB
 ; ----------------------------------------------------------------------------------------
 
-[env:Alternative PCB]
+[env:Alternative_PCB]
 board = esp32dev
 board_build.partitions = no_ota.csv