diff --git a/tools/regression/bin/sh/errors/assignment-error1.0 b/tools/regression/bin/sh/errors/assignment-error1.0
index 9e42f2be5fe6..c999b41b447f 100644
--- a/tools/regression/bin/sh/errors/assignment-error1.0
+++ b/tools/regression/bin/sh/errors/assignment-error1.0
@@ -1,30 +1,30 @@
 # $FreeBSD$
 IFS=,
 
 SPECIAL="break,\
 	:,\
 	continue,\
 	. /dev/null,\
 	eval,\
 	exec,\
 	export -p,\
 	readonly -p,\
 	set,\
 	shift,\
 	times,\
 	trap,\
 	unset foo"
 
 # If there is no command word, the shell must abort on an assignment error.
 sh -c "readonly a=0; a=2; exit 0" 2>/dev/null && exit 1
 
 # Special built-in utilities must abort on an assignment error.
 set -- ${SPECIAL}
 for cmd in "$@"
 do
 	sh -c "readonly a=0; a=2 ${cmd}; exit 0" 2>/dev/null && exit 1
 done
 
 # Other utilities must not abort; we currently still execute them.
-sh -c "readonly a=0; a=1 true; exit $a" 2>/dev/null || exit 1
-sh -c "readonly a=0; a=1 command :; exit $a" 2>/dev/null || exit 1
+sh -c 'readonly a=0; a=1 true; exit $a' 2>/dev/null || exit 1
+sh -c 'readonly a=0; a=1 command :; exit $a' 2>/dev/null || exit 1