diff --git a/Makefile.am b/Makefile.am
index c6425ce1..be6efd94 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -36,7 +36,6 @@ SUBDIRS = master devices script include
 DIST_SUBDIRS = master devices script include examples
 
 EXTRA_DIST = \
-	documentation/ethercat_doc.pdf \
 	Doxyfile \
 	FEATURES \
 	globals.h \