diff --git a/firmware/libboard/common/source/boardver_adc.c b/firmware/libboard/common/source/boardver_adc.c
index f204aa1..51db929 100644
--- a/firmware/libboard/common/source/boardver_adc.c
+++ b/firmware/libboard/common/source/boardver_adc.c
@@ -15,9 +15,8 @@
 #include "board.h"
 #include "boardver_adc.h"
 
-/* FIXME: share this with mode_cardemu.c */
 #define UV_PER_LSB	((3300 * 1000) / 4096)
-static uint32_t adc2uv(uint16_t adc)
+uint32_t adc2uv(uint16_t adc)
 {
 	uint32_t uv = (uint32_t) adc * UV_PER_LSB;
 	return uv;