@@ -486,12 +486,11 @@
 		if (fmt == nil)
 			@throw [OFInvalidArgumentException newWithClass: isa
 							       selector: _cmd];
 
 		if ((len = of_vasprintf(&string, [fmt cString], args)) == -1)
-			@throw [OFInvalidArgumentException newWithClass: isa
-							       selector: _cmd];
+			@throw [OFInvalidFormatException newWithClass: isa];
 
 		@try {
 			length = len;
 
 			switch (of_string_check_utf8(string, length)) {