--- a/Fraction.st	Tue Mar 07 22:55:20 1995 +0100
+++ b/Fraction.st	Thu Mar 09 00:40:27 1995 +0100
@@ -21,7 +21,7 @@
 COPYRIGHT (c) 1989 by Claus Gittinger
 	      All Rights Reserved
 
-$Header: /cvs/stx/stx/libbasic/Fraction.st,v 1.14 1995-03-06 19:16:09 claus Exp $
+$Header: /cvs/stx/stx/libbasic/Fraction.st,v 1.15 1995-03-08 23:38:25 claus Exp $
 '!
 
 !Fraction class methodsFor:'documentation'!
@@ -42,7 +42,7 @@
 
 version
 "
-$Header: /cvs/stx/stx/libbasic/Fraction.st,v 1.14 1995-03-06 19:16:09 claus Exp $
+$Header: /cvs/stx/stx/libbasic/Fraction.st,v 1.15 1995-03-08 23:38:25 claus Exp $
 "
 !
 
@@ -58,8 +58,10 @@
 !Fraction class methodsFor:'initialization'!
 
 initialize
-    FractionZero := self numerator:0 denominator:1.
-    FractionOne := self numerator:1 denominator:1
+    FractionZero isNil ifTrue:[
+	FractionZero := self numerator:0 denominator:1.
+	FractionOne := self numerator:1 denominator:1
+    ]
 ! !
 
 !Fraction class methodsFor:'constants'!