diff --git a/CHANGES b/CHANGES
index 949e24709..44d9fc2cf 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,5 +1,8 @@
 Changes for SVN top of tree:
 
+Fix bug #1687761: Archetype using undefined type number.
+Nicolas Weeger 2007-05-07
+
 Fix incorrectly converted jessyb.base.x13.png multi-part image.
 Andreas Kirschbaum 2007-05-06
 
diff --git a/planes/fire/burning_cathedral.arc b/planes/fire/burning_cathedral.arc
index ca0cb14a2..0a82db0ff 100644
--- a/planes/fire/burning_cathedral.arc
+++ b/planes/fire/burning_cathedral.arc
@@ -1,4 +1,4 @@
-Object object burning_cathedral
+Object burning_cathedral
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -10,7 +10,7 @@ magicmap grey
 client_type 25012
 end
 More
-object burning_cathedral_2
+Object burning_cathedral_2
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -21,7 +21,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_3
+Object burning_cathedral_3
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -32,7 +32,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_4
+Object burning_cathedral_4
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -43,7 +43,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_5
+Object burning_cathedral_5
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -55,7 +55,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_6
+Object burning_cathedral_6
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -67,7 +67,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_7
+Object burning_cathedral_7
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -78,7 +78,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_8
+Object burning_cathedral_8
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -90,7 +90,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_9
+Object burning_cathedral_9
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -102,7 +102,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_10
+Object burning_cathedral_10
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -113,7 +113,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_11
+Object burning_cathedral_11
 name burning cathedral
 type 66
 face burning_cathedral.x11
@@ -125,7 +125,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_cathedral_12
+Object burning_cathedral_12
 name burning cathedral
 type 66
 face burning_cathedral.x11
diff --git a/planes/fire/burning_fort.arc b/planes/fire/burning_fort.arc
index a3fcdd2f7..cddda8dce 100644
--- a/planes/fire/burning_fort.arc
+++ b/planes/fire/burning_fort.arc
@@ -1,4 +1,4 @@
-Object object burning_fort
+Object burning_fort
 name burning fortress
 type 66
 face burning_fort.x11
@@ -9,7 +9,7 @@ magicmap grey
 client_type 25012
 end
 More
-object burning_fort_2
+Object burning_fort_2
 name burning fortress
 type 66
 face burning_fort.x11
@@ -19,7 +19,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_fort_3
+Object burning_fort_3
 name burning fortress
 type 66
 face burning_fort.x11
@@ -29,7 +29,7 @@ visibility 100
 magicmap grey
 end
 More
-object burning_fort_4
+Object burning_fort_4
 name burning fortress
 type 66
 face burning_fort.x11