diff --git a/thesethreewords.py b/thesethreewords.py
index cc0e84e..a398d6c 100644
--- a/thesethreewords.py
+++ b/thesethreewords.py
@@ -77,17 +77,18 @@ class WordHasher(object):
         self.six_wordlist = HUMAN_WORDLIST
         self.three_wordlist = GOOGLE_WORDLIST
         
-    def three_words(self, (lat, lon)):
+    def three_words(self, lat_long):
         """Convert coordinate to a combination of three words
 
         The coordinate is defined by latitude and longitude
         in degrees.
         """
+        lat, lon = lat_long
         gh = geohash.encode(lat, lon, 9)
         words = "-".join(self.three_wordlist[p] for p in self.to_rugbits(self.geo_to_int(gh)))
         return words
 
-    def six_words(self, (lat, lon)):
+    def six_words(self, lat_long):
         """Convert coordinate to a combination of six words
 
         The coordinate is defined by latitude and longitude
@@ -96,6 +97,7 @@ class WordHasher(object):
         With six words the word list contains only words
         which are short, easy to pronounce and easy distinguish.
         """
+        lat, lon = lat_long
         gh = geohash.encode(lat, lon, 9)
         words = "-".join(self.six_wordlist[p] for p in self.to_bytes(self.pad(gh)))
         return words