Index: openvpn/src/openvpn/options.c
===================================================================
--- openvpn.orig/src/openvpn/options.c
+++ openvpn/src/openvpn/options.c
@@ -4243,7 +4243,12 @@ parse_line(const char *line,
     bool backslash = false;
     char in, out;
 
-    char parm[OPTION_PARM_SIZE];
+#ifdef ENABLE_PKCS11
+#   define PARM_SIZE USER_PASS_LEN
+#else
+#   define PARM_SIZE OPTION_PARM_SIZE
+#endif
+    char parm[PARM_SIZE];
     unsigned int parm_len = 0;
 
     msglevel &= ~M_OPTERR;