diff --git a/bin/cat/tests/Makefile b/bin/cat/tests/Makefile
index 925966b1978e..92e358245077 100644
--- a/bin/cat/tests/Makefile
+++ b/bin/cat/tests/Makefile
@@ -11,4 +11,10 @@ ${PACKAGE}FILES+=		d_se_output.out
 
 .include <netbsd-tests.test.mk>
 
+d_align.out: ${TESTSRC}/d_align.out
+	sed -E -e 's,^[[:space:]]{7}\$$$$,\$$,' < ${.ALLSRC} > ${.TARGET}.tmp
+	mv ${.TARGET}.tmp ${.TARGET}
+
+CLEANFILES+=			d_align.out d_align.out.tmp
+
 .include <bsd.test.mk>