diff --git a/Makefile-test.am b/Makefile-test.am
index 3a2d3c806..020b6680e 100644
--- a/Makefile-test.am
+++ b/Makefile-test.am
@@ -128,6 +128,7 @@ TESTS_UNIT += \
 
 endif ESYS
 if FAPI
+TESTS_CFLAGS +=  -DTOP_SOURCEDIR"=\"$(top_srcdir)\""
 TESTS_UNIT += \
     test/unit/fapi-json \
     test/unit/fapi-helpers \