diff --git a/glib/tests/Makefile.am b/glib/tests/Makefile.am
index a9c3d765c..a34669ee9 100644
--- a/glib/tests/Makefile.am
+++ b/glib/tests/Makefile.am
@@ -1,6 +1,11 @@
 include $(top_srcdir)/Makefile.decl
 
-INCLUDES = -g -I$(top_srcdir) -I$(top_srcdir)/glib $(GLIB_DEBUG_FLAGS)
+INCLUDES = 				\
+	-g 				\
+	-I$(top_srcdir) 		\
+	-I$(top_srcdir)/glib 		\
+	-DSRCDIR=\""$(srcdir)"\"	\
+	$(GLIB_DEBUG_FLAGS)
 
 noinst_PROGRAMS = $(TEST_PROGS)
 progs_ldadd     = $(top_builddir)/glib/libglib-2.0.la