diff --git a/ChangeLog b/ChangeLog
index ef833f26..e79c3fec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2006-07-10 Joerg Wunsch <j@uriah.heep.sax.de>
+
+	* avrdude.conf.in: Enter the signatures for the
+	ATmega164/324/644 devices.
+
 2006-05-25 Joerg Wunsch <j@uriah.heep.sax.de>
 
 	* stk500v2.c: Implement extended addressing needed
diff --git a/avrdude.conf.in b/avrdude.conf.in
index 8384883c..fda9e730 100644
--- a/avrdude.conf.in
+++ b/avrdude.conf.in
@@ -2484,7 +2484,7 @@ part
 #   stk500_devcode   = 0x82; # no STK500v1 support
 #   avr910_devcode   = 0x?;  # try the ATmega16 one:^
     avr910_devcode   = 0x74;
-#   signature        = 0x1e 0x94 ??;
+    signature        = 0x1e 0x94 0x09;
     pagel            = 0xd7;
     bs2              = 0xa0;
     chip_erase_delay = 9000;
@@ -2638,7 +2638,7 @@ part
 #   stk500_devcode   = 0x82; # no STK500v1 support
 #   avr910_devcode   = 0x?;  # try the ATmega16 one:^
     avr910_devcode   = 0x74;
-#   signature        = 0x1e 0x95 ??;
+    signature        = 0x1e 0x95 0x09;
     pagel            = 0xd7;
     bs2              = 0xa0;
     chip_erase_delay = 9000;
@@ -2792,7 +2792,7 @@ part
 #   stk500_devcode   = 0x82; # no STK500v1 support
 #   avr910_devcode   = 0x?;  # try the ATmega16 one:^
     avr910_devcode   = 0x74;
-#   signature        = 0x1e 0x96 ??;
+    signature        = 0x1e 0x96 0x09;
     pagel            = 0xd7;
     bs2              = 0xa0;
     chip_erase_delay = 9000;