diff --git a/test/default/Makefile.am b/test/default/Makefile.am
index 8b6629ae..cdfefb98 100644
--- a/test/default/Makefile.am
+++ b/test/default/Makefile.am
@@ -43,6 +43,7 @@ EXTRA_DIST = \
 	stream6.exp
 
 AM_CPPFLAGS = \
+	-DTEST_SRCDIR=\"@srcdir@\" \
 	-I$(top_srcdir)/src/libsodium/include \
 	-I$(top_srcdir)/src/libsodium/include/sodium \
 	-I$(top_builddir)/src/libsodium/include \
diff --git a/test/default/cmptest.h b/test/default/cmptest.h
index fa639550..dd383616 100644
--- a/test/default/cmptest.h
+++ b/test/default/cmptest.h
@@ -7,7 +7,7 @@
 #include "sodium.h"
 
 #define TEST_NAME_RES TEST_NAME ".res"
-#define TEST_NAME_OUT TEST_NAME ".exp"
+#define TEST_NAME_OUT TEST_SRCDIR "/" TEST_NAME ".exp"
 
 FILE *fp_res;
 int   xmain(void);