diff --git a/t/check-non-portable-shell.pl b/t/check-non-portable-shell.pl
index 8b5a71dc05216dc0acfb7761a4b9ca789c716ce0..45971f43b77142fe1bb90262974c83c786cfe43d 100755
--- a/t/check-non-portable-shell.pl
+++ b/t/check-non-portable-shell.pl
@@ -21,6 +21,7 @@ sub err {
 	/^\s*declare\s+/ and err 'arrays/declare not portable';
 	/^\s*[^#]\s*which\s/ and err 'which is not portable (please use type)';
 	/test\s+[^=]*==/ and err '"test a == b" is not portable (please use =)';
+	/^\s*export\s+[^=]*=/ and err '"export FOO=bar" is not portable (please use FOO=bar && export FOO)';
 	# this resets our $. for each file
 	close ARGV if eof;
 }
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 6d9d1418a041bd8b3dddb598ac5479c999047a06..a71d8b41e35494f2a17fd26637ec23c0baf9ade8 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -69,7 +69,7 @@ run_completion ()
 	local -a COMPREPLY _words
 	local _cword
 	_words=( $1 )
-	test "${1: -1}" == ' ' && _words+=('')
+	test "${1: -1}" = ' ' && _words+=('')
 	(( _cword = ${#_words[@]} - 1 ))
 	__git_wrap__git_main && print_comp
 }