diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index 230416763ef945..26e6e06c896371 100644
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -464,9 +464,11 @@ lib1551_SOURCES = lib1551.c $(SUPPORTFILES)
 lib1551_CPPFLAGS = $(AM_CPPFLAGS)
 
 lib1552_SOURCES = lib1552.c $(SUPPORTFILES) $(TESTUTIL)
+lib1552_LDADD = $(TESTUTIL_LIBS)
 lib1552_CPPFLAGS = $(AM_CPPFLAGS)
 
 lib1553_SOURCES = lib1553.c $(SUPPORTFILES) $(TESTUTIL)
+lib1553_LDADD = $(TESTUTIL_LIBS)
 lib1553_CPPFLAGS = $(AM_CPPFLAGS)
 
 lib1900_SOURCES = lib1900.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)