diff --git a/Source/NSDecimalNumber.m b/Source/NSDecimalNumber.m
index e91289b68..aff4c23c1 100644
--- a/Source/NSDecimalNumber.m
+++ b/Source/NSDecimalNumber.m
@@ -538,6 +538,7 @@ static NSDecimalNumber *one;
   NSDecimalNumber *dnum;
   num = [self doubleValue];
   dnum = [[NSDecimalNumber alloc] initWithBytes: &num objCType: "d"];
+  AUTORELEASE(dnum);
   return [dnum decimalValue];
 }
 @end