diff --git a/extra/new-effects/new-effects.factor b/extra/new-effects/new-effects.factor
index dbb7b850d0..f073ccadd3 100644
--- a/extra/new-effects/new-effects.factor
+++ b/extra/new-effects/new-effects.factor
@@ -2,16 +2,16 @@ USING: assocs kernel sequences ;
 IN: new-effects
 
 : new-nth ( seq n -- elt )
-    swap nth ;
+    swap nth ; inline
 
 : new-set-nth ( seq obj n -- seq )
-    pick set-nth ;
+    pick set-nth ; inline
 
 : new-at ( assoc key -- elt )
-    swap at ;
+    swap at ; inline
 
 : new-at* ( assoc key -- elt ? )
-    swap at* ;
+    swap at* ; inline
 
 : new-set-at ( assoc value key -- assoc )
-    pick set-at ;
+    pick set-at ; inline
diff --git a/extra/random/mersenne-twister/mersenne-twister.factor b/extra/random/mersenne-twister/mersenne-twister.factor
index bf2ff78f2d..ed515716e0 100755
--- a/extra/random/mersenne-twister/mersenne-twister.factor
+++ b/extra/random/mersenne-twister/mersenne-twister.factor
@@ -4,14 +4,11 @@
 ! http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/MT2002/CODES/mt19937ar.c
 
 USING: arrays kernel math namespaces sequences system init
-accessors math.ranges combinators.cleave random ;
+accessors math.ranges combinators.cleave random new-effects ;
 IN: random.mersenne-twister
 
 <PRIVATE
 
-: new-nth ( seq i -- elt ) swap nth ; inline
-: new-set-nth ( seq obj n -- seq ) pick set-nth ; inline
-
 TUPLE: mersenne-twister seq i ;
 
 : mt-n 624 ; inline