diff --git a/Makefile.am b/Makefile.am
index e8b7e67..1817e37 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,7 +2,6 @@
 # This file is part of p4est.
 # Makefile.am in toplevel directory
 
-ACLOCAL_AMFLAGS = -I config @P4EST_SC_AMFLAGS@
 if P4EST_SC_MK_USE
 @P4EST_SC_MK_INCLUDE@
 endif