diff --git a/src/shared/pkcs11-util.c b/src/shared/pkcs11-util.c
index 4fa1effb2d3..aff45ed868c 100644
--- a/src/shared/pkcs11-util.c
+++ b/src/shared/pkcs11-util.c
@@ -31,7 +31,7 @@ bool pkcs11_uri_valid(const char *uri) {
         if (isempty(p))
                 return false;
 
-        if (!in_charset(p, ALPHANUMERICAL "-_?;&%="))
+        if (!in_charset(p, ALPHANUMERICAL ".~/-_?;&%="))
                 return false;
 
         return true;