diff --git a/go/totp.go b/go/totp.go
index 868b660..5e2a78a 100644
--- a/go/totp.go
+++ b/go/totp.go
@@ -130,16 +130,14 @@ func loadConfigs() {
 
 //export getConfigNames
 func getConfigNames() (**C.char, C.int) {
-	names := make([]string, 0, len(configs))
+	names := make([]*C.char, len(configs))
+	i := 0
 	for name := range configs {
-		names = append(names, name)
-	}
-	cStrings := make([]*C.char, len(names))
-	for i, name := range names {
-		cStrings[i] = C.CString(name)
+		names[i] = C.CString(name)
+		i++
 	}
 
-	cArray := (**C.char)(unsafe.Pointer(&cStrings[0]))
+	cArray := (**C.char)(unsafe.Pointer(&names[0]))
 	runtime.KeepAlive(cArray)
 
 	return cArray, C.int(len(names))