diff --git a/docs/reference/speed_python.rst b/docs/reference/speed_python.rst
index 834a53b0a7..0c68dd60bd 100644
--- a/docs/reference/speed_python.rst
+++ b/docs/reference/speed_python.rst
@@ -247,7 +247,6 @@ Python will interpret the result as 2**32 -1 rather than as -1.
 
 In addition to the restrictions imposed by the native emitter the following constraints apply:
 
-* Functions may have up to four arguments.
 * Default argument values are not permitted.
 * Floating point may be used but is not optimised.