@@ -1391,10 +1391,25 @@
 {
 	OFMutableString *new = [[self mutableCopy] autorelease];
 
 	[new replaceOccurrencesOfString: string
 			     withString: replacement];
+
+	[new makeImmutable];
+
+	return new;
+}
+
+- (OFString*)stringByReplacingOccurrencesOfString: (OFString*)string
+				       withString: (OFString*)replacement
+					  inRange: (of_range_t)range
+{
+	OFMutableString *new = [[self mutableCopy] autorelease];
+
+	[new replaceOccurrencesOfString: string
+			     withString: replacement
+				inRange: range];
 
 	[new makeImmutable];
 
 	return new;
 }