diff --git a/radio/src/stamp.cpp b/radio/src/stamp.cpp
index e26e83e39..e826bde9c 100644
--- a/radio/src/stamp.cpp
+++ b/radio/src/stamp.cpp
@@ -51,8 +51,8 @@
  */
 #if defined(STM32)
 
-__attribute__ ((section(".fwversiondata"), used)) const char firmware_version[32] = "opentx-" FLAVOUR "-" VERSION " (" GIT_STR ")";
-__attribute__ ((section(".bootversiondata"), used)) const char boot_version[32] = "opentx-" FLAVOUR "-" VERSION " (" GIT_STR ")";
+__attribute__ ((section(".fwversiondata"), used)) const char firmware_version[] = "opentx-" FLAVOUR "-" VERSION " (" GIT_STR ")";
+__attribute__ ((section(".bootversiondata"), used)) const char boot_version[] = "opentx-" FLAVOUR "-" VERSION " (" GIT_STR ")";
 
 /**
  * Tries to find opentx version in the first 1024 byte of either firmware/bootloader (the one not running) or the buffer