diff --git a/tests/Makefile.am b/tests/Makefile.am
index 0196e0a1a222..0b6831be9799 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -2,7 +2,9 @@ CFLAGS_SAI = -I /usr/include/sai
 
 TESTS = tests
 
+if !HAVE_SAI
 SUBDIRS = mock_tests
+endif
 
 noinst_PROGRAMS = tests