diff --git a/src/hw_ostc_parser.c b/src/hw_ostc_parser.c
index f84e611..4d81f0c 100644
--- a/src/hw_ostc_parser.c
+++ b/src/hw_ostc_parser.c
@@ -918,7 +918,12 @@ hw_ostc_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t call
 					value = array_uint16_le (data + offset);
 					if (value != 0) {
 						sample.pressure.tank = tank;
-						sample.pressure.value = value / 10.0;
+						sample.pressure.value = value;
+						// The hwOS Sport firmware used a resolution of
+						// 0.1 bar between versions 10.40 and 10.50.
+						if (parser->model != OSTC4 && (firmware >= 0x0A28 && firmware <= 0x0A32)) {
+							sample.pressure.value /= 10.0;
+						}
 						if (callback) callback (DC_SAMPLE_PRESSURE, sample, userdata);
 					}
 					break;