diff --git a/scripts/flash.cmd b/scripts/flash.cmd
index b9b250e..a08e92c 100644
--- a/scripts/flash.cmd
+++ b/scripts/flash.cmd
@@ -2,4 +2,9 @@ CALL %~dp0setup.cmd
 CALL %~dp0compile.cmd
 
 :: "-f" forces overwriting old versions of the package
-gp --install %~dp0..\%PACKAGE%\javacard\%PACKAGE%.cap --params %PARAMS% -f
+
+IF [%PARAMS%]==[] (
+    gp -f --install %~dp0..\%PACKAGE%\javacard\%PACKAGE%.cap
+) ELSE (
+    gp -f --install %~dp0..\%PACKAGE%\javacard\%PACKAGE%.cap --params %PARAMS%
+)