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-rw-r--r--driver_aivdm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/driver_aivdm.c b/driver_aivdm.c
index 2fafaaa7..39dd20b6 100644
--- a/driver_aivdm.c
+++ b/driver_aivdm.c
@@ -728,7 +728,7 @@ void aivdm_dump(struct ais_t *ais, bool scaled, bool json, FILE *fp)
(void) strlcpy(speedlegend, "fast", sizeof(speedlegend));
else
(void)snprintf(speedlegend, sizeof(speedlegend),
- "%.0f", ais->type123.speed / 10.0);
+ "%.1f", ais->type123.speed / 10.0);
(void)fprintf(fp,
(json ? TYPE123_SCALED_JSON : TYPE123_SCALED_CSV),