diff --git a/Makefile.am b/Makefile.am
index f621563139cb6359a8a4e19f0728147613f8e1b8..e572ed8d6343b293004196afb2b2699809636ea5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -32,7 +32,9 @@ EXTRA_DIST = \
  opusfile-uninstalled.pc.in \
  doc/Doxyfile.in \
  doc/git-version.sh \
- doc/opus_logo.svg
+ doc/opus_logo.svg \
+ doc/Makefile \
+ unix/Makefile
 
 # Targets to build and install just the library without the docs
 opusfile install-opusfile: NO_DOXYGEN = 1