diff --git a/Makefile b/Makefile
index 2296c65ee661a29ffbe501d8a2470a2adee0f394..ac230122a7932654a09de9acd50aed37086df30a 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@
 
 # generate documentation
 docs:
-	cd docs && sphinx-apidoc -o . ../duniterpy && make clean && make html && cd ..
+	cd docs && rm duniterpy.*; sphinx-apidoc -o . ../duniterpy && make clean && make html && cd ..
 
 # run tests
 tests: