diff --git a/src/descriptor.c b/src/descriptor.c
index 5010635..f058e94 100644
--- a/src/descriptor.c
+++ b/src/descriptor.c
@@ -202,7 +202,7 @@ static const dc_descriptor_t g_descriptors[] = {
 	{"Aqualung", "i300",                DC_FAMILY_OCEANIC_ATOM2, 0x4559},
 	{"Aqualung", "i750TC",              DC_FAMILY_OCEANIC_ATOM2, 0x455A},
 	{"Aqualung", "i450T",               DC_FAMILY_OCEANIC_ATOM2, 0x4641},
-	{"Aqualung", "i550T",               DC_FAMILY_OCEANIC_ATOM2, 0x4642},
+	{"Aqualung", "i550",                DC_FAMILY_OCEANIC_ATOM2, 0x4642},
 	/* Mares Nemo */
 	{"Mares", "Nemo",         DC_FAMILY_MARES_NEMO, 0},
 	{"Mares", "Nemo Steel",   DC_FAMILY_MARES_NEMO, 0},
diff --git a/src/oceanic_atom2_parser.c b/src/oceanic_atom2_parser.c
index 2fcf8b3..ea041a2 100644
--- a/src/oceanic_atom2_parser.c
+++ b/src/oceanic_atom2_parser.c
@@ -83,7 +83,7 @@
 #define I300        0x4559
 #define I750TC      0x455A
 #define I450T       0x4641
-#define I550T       0x4642
+#define I550        0x4642
 
 #define NORMAL   0
 #define GAUGE    1
@@ -154,7 +154,7 @@ oceanic_atom2_parser_create (dc_parser_t **out, dc_context_t *context, unsigned
 		model == OCS || model == PROPLUS3 ||
 		model == A300 || model == MANTA ||
 		model == INSIGHT2 || model == ZEN ||
-		model == I300 || model == I550T) {
+		model == I300 || model == I550) {
 		parser->headersize -= PAGESIZE;
 	} else if (model == VT4 || model == VT41) {
 		parser->headersize += PAGESIZE;
@@ -245,7 +245,7 @@ oceanic_atom2_parser_get_datetime (dc_parser_t *abstract, dc_datetime_t *datetim
 		case ATOM31:
 		case A300AI:
 		case OCI:
-		case I550T:
+		case I550:
 		case VISION:
 		case XPAIR:
 			datetime->year   = ((p[5] & 0xE0) >> 5) + ((p[7] & 0xE0) >> 2) + 2000;
@@ -850,7 +850,7 @@ oceanic_atom2_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_
 				} else {
 					unsigned int sign;
 					if (parser->model == DG03 || parser->model == PROPLUS3 ||
-						parser->model == I550T)
+						parser->model == I550)
 						sign = (~data[offset + 5] & 0x04) >> 2;
 					else if (parser->model == VOYAGER2G || parser->model == AMPHOS ||
 						parser->model == AMPHOSAIR || parser->model == ZENAIR)
@@ -881,7 +881,7 @@ oceanic_atom2_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_
 					parser->model == ATOM3 || parser->model == ATOM31 ||
 					parser->model == ZENAIR ||parser->model == A300AI ||
 					parser->model == DG03 || parser->model == PROPLUS3 ||
-					parser->model == AMPHOSAIR || parser->model == I550T ||
+					parser->model == AMPHOSAIR || parser->model == I550 ||
 					parser->model == VISION || parser->model == XPAIR)
 					pressure = (((data[offset + 0] & 0x03) << 8) + data[offset + 1]) * 5;
 				else if (parser->model == TX1 || parser->model == A300CS ||
@@ -945,7 +945,7 @@ oceanic_atom2_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_
 				decotime = array_uint16_le(data + offset + 6);
 				have_deco = 1;
 			} else if (parser->model == ATOM31 || parser->model == VISION ||
-				parser->model == XPAIR || parser->model == I550T) {
+				parser->model == XPAIR || parser->model == I550) {
 				decostop = (data[offset + 5] & 0xF0) >> 4;
 				decotime = array_uint16_le(data + offset + 4) & 0x03FF;
 				have_deco = 1;
@@ -971,7 +971,7 @@ oceanic_atom2_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_
 				rbt = array_uint16_le(data + offset + 8) & 0x01FF;
 				have_rbt = 1;
 			} else if (parser->model == VISION || parser->model == XPAIR ||
-				parser->model == I550T) {
+				parser->model == I550) {
 				rbt = array_uint16_le(data + offset + 6) & 0x03FF;
 				have_rbt = 1;
 			}