diff --git a/mt.c b/mt.c
index 55f4349..2fd2503 100644
--- a/mt.c
+++ b/mt.c
@@ -175,7 +175,7 @@ static struct densities {
     { 0x26, "DDS-4 or QIC-4GB"               },
     { 0x27, "Exabyte Mammoth"                },
     { 0x28, "Exabyte Mammoth-2"              },
-    { 0x29, "QIC-3080MC"                     },
+    { 0x29, "QIC-3080MC, IBM 3590 B"         },
     { 0x2a, "IBM 3590 E"                     },
     { 0x30, "AIT-1 or MLR3"                  },
     { 0x31, "AIT-2"                          },