diff --git a/development/cpp/custom_modules_in_cpp.rst b/development/cpp/custom_modules_in_cpp.rst
index da2a0d744..9484a42bf 100644
--- a/development/cpp/custom_modules_in_cpp.rst
+++ b/development/cpp/custom_modules_in_cpp.rst
@@ -338,7 +338,7 @@ shared module as target in the scons command:
 
 ::
 
-    user@host:~/godot$ scons summator_shared=yes bin/summator.x11.tools.64.so
+    user@host:~/godot$ scons summator_shared=yes platform=x11 bin/libsummator.x11.tools.64.so
 
 Writing custom documentation
 ----------------------------