diff --git a/MANIFEST.in b/MANIFEST.in
index 741d4f2fae70983e30da70ccbc8e7ddb997b06f1..fdbf85c0dc1a99f5e0f094203094bd875059e377 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,6 +2,5 @@ include README.md
 include COPYING.txt
 include RELEASE-VERSION
 global-include *.pyx
-global-exclude phasefield/simplex_projection.c
 include versioneer.py
 include lbmpy/_version.py