diff --git a/doc/previews/Makefile.am b/doc/previews/Makefile.am
index ac488d9431..230365634d 100644
--- a/doc/previews/Makefile.am
+++ b/doc/previews/Makefile.am
@@ -4,7 +4,6 @@ if EFL_BUILD_DOC
 .PHONY: doc
 
 AM_CPPFLAGS = \
--I$(top_srcdir)/src/lib/efl \
 -I$(top_builddir)/src/lib/efl \
 -I$(top_srcdir)/src/lib/efl \
 -I. \