diff --git a/script/rock.py b/script/rock.py
index f324929..257c7b3 100644
--- a/script/rock.py
+++ b/script/rock.py
@@ -52,5 +52,5 @@ def rock(axis = None, ffail = False, tt = 0.2, seti0 = False, dx = None, noref =
         caput('X06DA-OP-MO:MONOBEAM', br)
         print 'rock_success new mono beam at ' + str(br) + ' at' + str(e) + ' keV'
 
-
-rock(rock_axis)
+if __name__ == "__builtin__":
+    rock(rock_axis)