diff --git a/testsuites/samples/nsecs/Makefile.am b/testsuites/samples/nsecs/Makefile.am
index af8ee148ee..4622887a03 100644
--- a/testsuites/samples/nsecs/Makefile.am
+++ b/testsuites/samples/nsecs/Makefile.am
@@ -5,7 +5,7 @@
 MANAGERS = all
 
 rtems_tests_PROGRAMS = nsecs
-nsecs_SOURCES = init.c empty.c
+nsecs_SOURCES = init.c empty.c rprintf.h
 
 dist_rtems_tests_DATA = nsecs.scn
 dist_rtems_tests_DATA += nsecs.doc