diff --git a/wani.py b/wani.py
index 65d7600..6b2e03b 100644
--- a/wani.py
+++ b/wani.py
@@ -468,12 +468,13 @@ def build_morphology_regex(restriction):
         if typ:
             min_msd_length = max(index + 1, min_msd_length)
 
+    re_objects = [re.compile(r) for r in rgx]
     def matcher(text):
         if len(text) <= min_msd_length:
             return False
 
-        for c, r in zip(text, rgx):
-            if not re.match(r, c):
+        for c, r in zip(text, re_objects):
+            if not r.match(c):
                 return False
         return True