diff --git a/MD_STD_IN.php b/MD_STD_IN.php
index ce56f6e..6dd6b20 100644
--- a/MD_STD_IN.php
+++ b/MD_STD_IN.php
@@ -78,6 +78,9 @@ final class MD_STD_IN {
             FILTER_FLAG_NO_ENCODE_QUOTES);
 
         if ($output === false) return "";
+        while (strpos($output, "  ") !== false) {
+            $output = str_replace("  ", " ", $output);
+        }
 
         return trim($output);