diff --git a/main.c b/main.c
index 7869f721..c127b62c 100644
--- a/main.c
+++ b/main.c
@@ -1307,7 +1307,7 @@ int main(int argc, char **argv)
 			}
 			break;
 		case 'p':
-			vpninfo->cert_password = strdup(config_arg);
+			vpninfo->cert_password = dup_config_arg();
 			break;
 		case 'P':
 			proxy = keep_config_arg();