diff --git a/uri.c b/uri.c
index 6e43fc9..27a6991 100644
--- a/uri.c
+++ b/uri.c
@@ -898,7 +898,7 @@
 
 	ch = *in;
 
-	if ( (!IS_UNRESERVED(ch)) && (!xmlStrchr(list, ch)) ) {
+	if ((ch != '@') && (!IS_UNRESERVED(ch)) && (!xmlStrchr(list, ch))) {
 	    unsigned char val;
 	    ret[out++] = '%';
 	    val = ch >> 4;