diff --git a/devlist.txt b/devlist.txt
index 573b786..fad6107 100644
--- a/devlist.txt
+++ b/devlist.txt
@@ -25,6 +25,7 @@
 03696093      6    0x9 XC7VX980T
 
 03722093      6    0x9 XC7Z010
+03723093      6    0x9 XC7Z007S
 03727093      6    0x9 XC7Z020
 0372c093      6    0x9 XC7Z030
 03731093      6    0x9 XC7Z045
diff --git a/utilities.cpp b/utilities.cpp
index cd093dd..f951363 100644
--- a/utilities.cpp
+++ b/utilities.cpp
@@ -31,7 +31,7 @@ void detect_chain(Jtag *jtag, DeviceDB *db)
           jtag->setDeviceIRLength(i,length);
           fprintf(stderr,"Desc: %30s Rev: %c  IR length: %2d\n",
                   db->idToDescription(id),
-                  (int)(id >> 28) | 'A', length);
+                  (int)(id >> 28) + 'A', length);
         }
       else
         {