diff --git a/modal.py b/modal.py
index 7762ef2..9e8dfd7 100644
--- a/modal.py
+++ b/modal.py
@@ -125,8 +125,6 @@ def apply(queue, rules, pattern, replacement):
     if not pattern:
         return (False, roll(queue))
     replacement = construct(replacement, context)
-    if not replacement:
-        return (False, roll(queue))
     return (True, enqueue(dequeue(queue, len(pattern)), replacement))
 
 def define(queue, rules, pattern):
@@ -305,7 +303,7 @@ def run(rules, queue, limit=pow(2, 32)):
             result, queue = operation(queue, rules, pattern, *parameters)
             if result == True:
                 failures = 0
-            print("<>:   ", inspect(seek(queue, ["SRT"])))
+            #print("<>:   ", inspect(seek(queue, ["SRT"])))
             #print("<>:   ", inspect(queue))
             #input()
         steps = steps + 1