diff --git a/test/bin/Makefile.am b/test/bin/Makefile.am
index 346db5d..478f62b 100644
--- a/test/bin/Makefile.am
+++ b/test/bin/Makefile.am
@@ -1,6 +1,6 @@
 check_PROGRAMS = json_process
 
-AM_CPPFLAGS = -I$(top_srcdir)/src
+AM_CPPFLAGS = -I$(top_builddir)/src -I$(top_srcdir)/src
 AM_CFLAGS = -Wall -Werror
 LDFLAGS = -static  # for speed and Valgrind
 LDADD = $(top_builddir)/src/libjansson.la
diff --git a/test/suites/api/Makefile.am b/test/suites/api/Makefile.am
index 9e60f48..2b1746d 100644
--- a/test/suites/api/Makefile.am
+++ b/test/suites/api/Makefile.am
@@ -29,7 +29,7 @@ test_pack_SOURCES = test_pack.c util.h
 test_simple_SOURCES = test_simple.c util.h
 test_unpack_SOURCES = test_unpack.c util.h
 
-AM_CPPFLAGS = -I$(top_srcdir)/src
+AM_CPPFLAGS = -I$(top_builddir)/src -I$(top_srcdir)/src
 AM_CFLAGS = -Wall -Werror
 LDFLAGS = -static  # for speed and Valgrind
 LDADD = $(top_builddir)/src/libjansson.la