diff --git a/httpbin/core.py b/httpbin/core.py
index 4c9f273..8390276 100644
--- a/httpbin/core.py
+++ b/httpbin/core.py
@@ -441,7 +441,7 @@ def digest_auth(qop=None, user='user', passwd='passwd'):
 @app.route('/delay/<delay>')
 def delay_response(delay):
     """Returns a delayed response"""
-    delay = min(delay, 10)
+    delay = min(float(delay), 10)
 
     time.sleep(delay)