diff --git a/test/exec/cases/base/builtin_kill.ds b/test/exec/cases/base/builtin_kill.ds
index 3388952fc..b43fcfe83 100644
--- a/test/exec/cases/base/builtin_kill.ds
+++ b/test/exec/cases/base/builtin_kill.ds
@@ -71,12 +71,12 @@ ${$SCRIPT_NAME.basename()}:69: kill: hoge: invalid signal specification
 HUP"
 assert {kill -l 9 hoge 1; $?} == 1
 
-if $OSTYPE == 'linux' {
+if (test -e /dev/full) {
     assert "$(kill -l 9 1 2>&1 > /dev/full)" =~ $/kill: io error: .+/
     assert $? == 1
 }
 
-if $OSTYPE == 'linux' {
+if (test -e /dev/full) {
     assert "$(kill -l HUP KILL 2>&1 > /dev/full)" =~ $/kill: io error: .+/
     assert $? == 1
 }