diff --git a/acid.go b/acid.go
index 2c59c38..17ca23b 100644
--- a/acid.go
+++ b/acid.go
@@ -102,7 +102,7 @@ var shellFuncs = ttemplate.FuncMap{
 	"quote": func(word string) string {
 		// History expansion is annoying, don't let it cut us.
 		if strings.IndexRune(word, '!') >= 0 {
-			return "'" + strings.ReplaceAll(word, "'", `'"'"'`) + "'"
+			return "'" + strings.ReplaceAll(word, "'", `'\''`) + "'"
 		}
 
 		const special = "$`\"\\"
diff --git a/acid_test.go b/acid_test.go
index f23d892..614fd0a 100644
--- a/acid_test.go
+++ b/acid_test.go
@@ -12,7 +12,7 @@ func TestTemplateQuote(t *testing.T) {
 	for _, test := range []struct {
 		input, output string
 	}{
-		{`!!`, `'!!'`},
+		{`!!'!$`, `'!!'\''!$'`},
 		{``, `""`},
 		{`${var}`, `"\${var}"`},
 		{"`cat`", "\"\\`cat\\`\""},