diff --git a/src/version.cpp b/src/version.cpp
index 9fae7aa..ea49f1f 100644
--- a/src/version.cpp
+++ b/src/version.cpp
@@ -1,7 +1,8 @@
 #include <version.hpp>
 
 
-// Define structure at the end of flash which contains information about the version of the firmware
+// Define structure at a fixed address in flash which contains information about the version of the firmware
+// This structure is read using the bootloader.
 struct Signatures {
     uint8_t project_major;
     uint8_t project_minor;