diff --git a/src/hardware/victor-dmm/protocol.c b/src/hardware/victor-dmm/protocol.c
index 6f72d947..1d2910fb 100644
--- a/src/hardware/victor-dmm/protocol.c
+++ b/src/hardware/victor-dmm/protocol.c
@@ -168,6 +168,7 @@ static void decode_buf(struct sr_dev_inst *sdi, unsigned char *data)
 		fvalue = -fvalue;
 
 	sr_analog_init(&analog, &encoding, &meaning, &spec, 4);
+	spec.spec_digits = 3;
 
 	/* Measurement mode */
 	meaning.channels = sdi->channels;