diff --git a/src/charon/plugins/unit_tester/Makefile.am b/src/charon/plugins/unit_tester/Makefile.am
index 0fd387f1f..ff3d77062 100644
--- a/src/charon/plugins/unit_tester/Makefile.am
+++ b/src/charon/plugins/unit_tester/Makefile.am
@@ -5,7 +5,7 @@ AM_CFLAGS = -rdynamic
 
 plugin_LTLIBRARIES = libstrongswan-unit-tester.la
 
-libstrongswan_unit_tester_la_SOURCES = unit_tester.c unit_tester.h \
+libstrongswan_unit_tester_la_SOURCES = unit_tester.c unit_tester.h tests.h \
   tests/test_enumerator.c \
   tests/test_auth_info.c \
   tests/test_fips_prf.c \