diff --git a/examples/universal.c b/examples/universal.c
index 4eef0c5..48be0de 100644
--- a/examples/universal.c
+++ b/examples/universal.c
@@ -241,7 +241,7 @@ sample_cb (dc_sample_type_t type, dc_sample_value_t value, void *userdata)
 		"none", "deco", "rbt", "ascent", "ceiling", "workload", "transmitter",
 		"violation", "bookmark", "surface", "safety stop", "gaschange",
 		"safety stop (voluntary)", "safety stop (mandatory)", "deepstop",
-		"ceiling (safety stop)", "unknown", "divetime", "maxdepth",
+		"ceiling (safety stop)", "floor", "divetime", "maxdepth",
 		"OLF", "PO2", "airtime", "rgbm", "heading", "tissue level warning",
 		"gaschange2"};
 	static const char *decostop[] = {
diff --git a/include/libdivecomputer/parser.h b/include/libdivecomputer/parser.h
index a92e653..16ca2b3 100644
--- a/include/libdivecomputer/parser.h
+++ b/include/libdivecomputer/parser.h
@@ -73,7 +73,7 @@ typedef enum parser_sample_event_t {
 	SAMPLE_EVENT_SAFETYSTOP_MANDATORY,
 	SAMPLE_EVENT_DEEPSTOP,
 	SAMPLE_EVENT_CEILING_SAFETYSTOP,
-	SAMPLE_EVENT_UNKNOWN,
+	SAMPLE_EVENT_FLOOR,
 	SAMPLE_EVENT_DIVETIME,
 	SAMPLE_EVENT_MAXDEPTH,
 	SAMPLE_EVENT_OLF,
@@ -87,6 +87,9 @@ typedef enum parser_sample_event_t {
 	                            respectively the low and high part. */
 } parser_sample_event_t;
 
+/* For backwards compatibility */
+#define SAMPLE_EVENT_UNKNOWN SAMPLE_EVENT_FLOOR
+
 typedef enum parser_sample_flags_t {
 	SAMPLE_FLAGS_NONE = 0,
 	SAMPLE_FLAGS_BEGIN = (1 << 0),
diff --git a/src/suunto_d9_parser.c b/src/suunto_d9_parser.c
index 11c7d0f..65e7e87 100644
--- a/src/suunto_d9_parser.c
+++ b/src/suunto_d9_parser.c
@@ -482,8 +482,8 @@ suunto_d9_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t ca
 					case 0x06: // Mandatory Safety Stop Ceiling Error
 						sample.event.type = SAMPLE_EVENT_CEILING_SAFETYSTOP;
 						break;
-					case 0x07: // Unknown (Deco related)
-						sample.event.type = SAMPLE_EVENT_UNKNOWN;
+					case 0x07: // Below Deco Floor
+						sample.event.type = SAMPLE_EVENT_FLOOR;
 						break;
 					case 0x08: // Dive Time
 						sample.event.type = SAMPLE_EVENT_DIVETIME;