diff --git a/rest_framework/throttling.py b/rest_framework/throttling.py
index 91be9cfd5..b68429f49 100644
--- a/rest_framework/throttling.py
+++ b/rest_framework/throttling.py
@@ -41,7 +41,7 @@ class SimpleRateThrottle(BaseThrottle):
 
     cache = default_cache
     timer = time.time
-    cache_format = 'throtte_%(scope)s_%(ident)s'
+    cache_format = 'throttle_%(scope)s_%(ident)s'
     scope = None
     THROTTLE_RATES = api_settings.DEFAULT_THROTTLE_RATES