diff --git a/code/math/implementation.lisp b/code/math/implementation.lisp
index 50991689..544ca5e3 100644
--- a/code/math/implementation.lisp
+++ b/code/math/implementation.lisp
@@ -1,18 +1,18 @@
 (in-package #:quaviver/math)
 
 (deftype word (arithmetic-size &optional (count 1))
-   #+quaviver/bignum-elision
-   (ecase arithmetic-size
-     (32 (case count
-           (1 `(unsigned-byte 32))
-           (2 `(unsigned-byte 64))
-           (otherwise `(simple-array (unsigned-byte 64) (,(ceiling count 2))))))
-     (64 (if (eql count 1)
-             `(unsigned-byte 64)
-             `(simple-array (unsigned-byte 64) (,count))))
-     (128 `(simple-array (unsigned-byte 64) (,(ash count 1)))))
-   #-quaviver/bignum-elision
-   `(unsigned-byte ,(* arithmetic-size count)))
+  #+quaviver/bignum-elision
+  (ecase arithmetic-size
+    (32 (case count
+          (1 `(unsigned-byte 32))
+          (2 `(unsigned-byte 64))
+          (otherwise `(simple-array (unsigned-byte 64) (,(ceiling count 2))))))
+    (64 (if (eql count 1)
+            `(unsigned-byte 64)
+            `(simple-array (unsigned-byte 64) (,count))))
+    (128 `(unsigned-byte ,(* arithmetic-size count))))
+  #-quaviver/bignum-elision
+  `(unsigned-byte ,(* arithmetic-size count)))
 
 ;;; Bignum elision
 ;;;