diff --git a/src/platform/tests/Makefile.am b/src/platform/tests/Makefile.am
index 5f110c888..da9986ffe 100644
--- a/src/platform/tests/Makefile.am
+++ b/src/platform/tests/Makefile.am
@@ -2,6 +2,7 @@ AM_CPPFLAGS = \
 	-I${top_srcdir} \
 	-I${top_srcdir}/include \
 	-I${top_srcdir}/src \
+	-I${top_builddir}/src \
 	-I${top_srcdir}/src/logging \
 	-I${top_srcdir}/libnm-util \
 	-I${srcdir}/.. \