diff --git a/ChangeLog b/ChangeLog
index 1560c06f..5f314212 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2004-12-01 02:12 Gregory John Casamento <greg_casamento@yahoo.com>
+
+	* GormClassManager.m: [GormClassManager parseHeader:] altered
+	method to throw NSInvalidArgumentException instead of a custom
+	exception.  
+	
 2004-11-29 23:40 Gregory John Casamento <greg_casamento@yahoo.com>
 
 	* GormPalettesManager.[hm]: [GormPalettesManager loadPalette:] now
diff --git a/GormClassManager.m b/GormClassManager.m
index 4ee645e7..4c0b394e 100644
--- a/GormClassManager.m
+++ b/GormClassManager.m
@@ -1625,7 +1625,7 @@
 	      else
 		{
 		  result = NO;
-		  [NSException raise: @"UnknownParentClass"
+		  [NSException raise: NSInvalidArgumentException
 			       format: @"The superclass %@ of class %@ is not known, please parse it.",
 			       superClass, className];
 		}