diff --git a/src/conv.rs b/src/conv.rs
index ad61758..9ee8bf3 100644
--- a/src/conv.rs
+++ b/src/conv.rs
@@ -14,9 +14,9 @@ const BASE64_VALIDATE_RE_STR: &'static str = r#"^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z
 
 lazy_static!{
     static ref BASE64_CONV_TABLE: smallmap::Map<char, char> = smallmap![
-	{'/' => 'ł'},
-	{'+' => 'þ'},
-	{'=' => 'ø'},
+	{'/' => '_'},
+	{'+' => 'ł'},
+	{'=' => '-'},
     ];
     static ref BASE64_CONV_TABLE_REV: smallmap::Map<char, char> = BASE64_CONV_TABLE.clone().reverse();