diff --git a/crt/shaders/crt-caligari.slang b/crt/shaders/crt-caligari.slang
index 978febb..1e6990b 100644
--- a/crt/shaders/crt-caligari.slang
+++ b/crt/shaders/crt-caligari.slang
@@ -36,8 +36,8 @@ layout(push_constant) uniform Push
 
 // 0.5 = the spot stays inside the original pixel
 // 1.0 = the spot bleeds up to the center of next pixel
-#pragma parameter SPOT_WIDTH "CRTCaligari Spot Width" 0.9 0.1 1.5 0.05
-#pragma parameter SPOT_HEIGHT "CRTCaligari Spot Height" 0.65 0.1 1.5 0.05
+#pragma parameter SPOT_WIDTH "CRTCaligari Spot Width" 0.9 0.5 1.5 0.05
+#pragma parameter SPOT_HEIGHT "CRTCaligari Spot Height" 0.65 0.5 1.5 0.05
 // Used to counteract the desaturation effect of weighting.
 #pragma parameter COLOR_BOOST "CRTCaligari Color Boost" 1.45 1.0 2.0 0.05
 // Constants used with gamma correction.
@@ -143,4 +143,4 @@ void main()
    color *= vec4( params.COLOR_BOOST );
 
    FragColor = clamp( GAMMA_OUT(color), 0.0, 1.0 );
-}
\ No newline at end of file
+}