diff --git a/waggle-dance.py b/waggle-dance.py
index d0aa23f..37b912f 100755
--- a/waggle-dance.py
+++ b/waggle-dance.py
@@ -15,7 +15,7 @@ def matchings(l):
     result = []
     for i in range(len(l)):
         matching = [(center, l[i])]
-        for j in range(1, (len(l)-1)/2 + 1):
+        for j in range(1, (len(l)-1)//2 + 1):
             matching.append((l[(i-j)%len(l)], l[(i+j)%len(l)]))
         result.append(matching)
     return result
@@ -88,7 +88,7 @@ async def on_message(message):
     pollination_channels = []
     channel_names = config['channel_names'].copy()
     exception_count = 0
-    while len(pollination_channels) < len(participants)/2:
+    while len(pollination_channels) < len(participants)//2:
         if len(channel_names) > 0:
             name = channel_names.pop(0)
         else: