diff --git a/les/utils/expiredvalue.go b/les/utils/expiredvalue.go
index 55e82cee48192a09dbacdc1999dacd61f806ac95..1a2b3d995e3b34684bd21fbc4c0e1432141fc729 100644
--- a/les/utils/expiredvalue.go
+++ b/les/utils/expiredvalue.go
@@ -88,8 +88,9 @@ func (e *ExpiredValue) Add(amount int64, logOffset Fixed64) int64 {
 	if base >= 0 || uint64(-base) <= e.Base {
 		// This is a temporary fix to circumvent a golang
 		// uint conversion issue on arm64, which needs to
-		// be investigated further. FIXME
-		e.Base = uint64(int64(e.Base) + int64(base))
+		// be investigated further. More details at:
+		// https://github.com/golang/go/issues/43047
+		e.Base += uint64(int64(base))
 		return amount
 	}
 	net := int64(-float64(e.Base) / factor)