diff --git a/src/divesystem_idive_parser.c b/src/divesystem_idive_parser.c
index 7325b0b..b8d103d 100644
--- a/src/divesystem_idive_parser.c
+++ b/src/divesystem_idive_parser.c
@@ -477,28 +477,20 @@ divesystem_idive_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callba
 			decostop = array_uint16_le (data + offset + 21);
 			decotime = array_uint16_le (data + offset + 23);
 			tts      = array_uint16_le (data + offset + 25);
-			if (tts == 0x7FFF) {
-				tts = INVALID;
-			}
 		} else {
 			decostop = array_uint16_le (data + offset + 21);
 			tts      = array_uint16_le (data + offset + 23);
-			if (tts == 0xFFFF) {
-				tts = INVALID;
-			}
 		}
-		if (tts != INVALID) {
-			if (decostop) {
-				sample.deco.type = DC_DECO_DECOSTOP;
-				sample.deco.depth = decostop / 10.0;
-				sample.deco.time = apos4 ? decotime : tts;
-			} else {
-				sample.deco.type = DC_DECO_NDL;
-				sample.deco.depth = 0.0;
-				sample.deco.time = tts;
-			}
-			if (callback) callback (DC_SAMPLE_DECO, sample, userdata);
+		if (decostop) {
+			sample.deco.type = DC_DECO_DECOSTOP;
+			sample.deco.depth = decostop / 10.0;
+			sample.deco.time = apos4 ? decotime : tts;
+		} else {
+			sample.deco.type = DC_DECO_NDL;
+			sample.deco.depth = 0.0;
+			sample.deco.time = tts;
 		}
+		if (callback) callback (DC_SAMPLE_DECO, sample, userdata);
 
 		// CNS
 		unsigned int cns = array_uint16_le (data + offset + 29);