diff --git a/src/oceanic_common.c b/src/oceanic_common.c
index 05d5006..62f5f74 100644
--- a/src/oceanic_common.c
+++ b/src/oceanic_common.c
@@ -51,9 +51,6 @@ get_profile_first (const unsigned char data[], const oceanic_common_layout_t *la
 		value = array_uint16_le (data + 4);
 	} else if (layout->pt_mode_logbook == 3) {
 		value = array_uint16_le (data + 16);
-	} else if (layout->pt_mode_logbook == 4) {
-		first = array_uint32_le (data + 8);
-		last  = array_uint32_le (data + 12);
 	} else {
 		return array_uint16_le (data + 16);
 	}