diff --git a/keyboard.xml b/keyboard.xml
index 59d11ff9d..6734eda30 100644
--- a/keyboard.xml
+++ b/keyboard.xml
@@ -320,6 +320,7 @@ calculated by adding 256 to the GLUT key value in glut.h.
property-adjust
/sim/speed-up
+ 1
-1
@@ -425,6 +426,7 @@ calculated by adding 256 to the GLUT key value in glut.h.
property-adjust
/sim/speed-up
+ 1
1