diff --git a/.gitignore b/.gitignore
index 6b2ea0a..a286c1d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 *.jl.mem
 docs/build/
 docs/site/
+src/ros_callbacks.pyc
diff --git a/src/RobotOS.jl b/src/RobotOS.jl
index 2c48ce9..1891c96 100644
--- a/src/RobotOS.jl
+++ b/src/RobotOS.jl
@@ -1,3 +1,5 @@
+isdefined(Base, :__precompile__) && __precompile__()
+
 module RobotOS
 
 using PyCall