diff --git a/src/xwayland/Makefile.am b/src/xwayland/Makefile.am
index 77124ffd..3a26cbd6 100644
--- a/src/xwayland/Makefile.am
+++ b/src/xwayland/Makefile.am
@@ -1,5 +1,6 @@
 AM_CPPFLAGS =					\
 	-I$(top_srcdir)/shared			\
+	-I$(top_builddir)/src			\
 	-DDATADIR='"$(datadir)"'		\
 	-DMODULEDIR='"$(moduledir)"'		\
 	-DLIBEXECDIR='"$(libexecdir)"'		\
diff --git a/tests/Makefile.am b/tests/Makefile.am
index f2960f11..0f81458d 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -35,6 +35,7 @@ AM_CFLAGS = $(GCC_CFLAGS)
 AM_CPPFLAGS =					\
 	-I$(top_srcdir)/src			\
 	-I$(top_srcdir)/shared			\
+	-I$(top_builddir)/src			\
 	-DUNIT_TEST				\
 	$(COMPOSITOR_CFLAGS)
 AM_LDFLAGS = -module -avoid-version -rpath $(libdir)