diff --git a/src/internal/ptycon_open_impl.c b/src/internal/ptycon_open_impl.c
index 24318fd..ace2c6a 100644
--- a/src/internal/ptycon_open_impl.c
+++ b/src/internal/ptycon_open_impl.c
@@ -80,7 +80,7 @@ static int32_t ptyc_open_volume(
 
 	if ((arg[1]==':') && ((arg[2]=='\\') || (arg[2]=='/'))) {
 		if ((status = ntapi->tt_get_dos_drive_root_handle(
-				&hvolume,&drive)))
+				&hvolume,drive)))
 			return status;
 
 		hat = hvolume;