diff --git a/Makefile.am b/Makefile.am
index 27d63a4..0266a53 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -42,7 +42,10 @@
 AM_CXXFLAGS = $(CODE_COVERAGE_CXXFLAGS)
 
 include test/Makefile.am.include
+
+if VIRTUAL_PNOR_ENABLED
 include vpnor/test/Makefile.am.include
+endif
 
 TESTS = $(check_PROGRAMS)