diff --git a/read.py b/read.py
index fd6aa8a..9af2cc4 100644
--- a/read.py
+++ b/read.py
@@ -8,7 +8,7 @@
     shm_r = SharedMemoryFrameReader('frame')
 
     fps = 25
-    max_sleep = 1.0 / 25
+    max_sleep = 1.0 / fps
     next_sleep = max_sleep
 
     while True: