--- a/src/misc_gui.cpp	Thu Jan 18 23:45:58 2007 +0000
+++ b/src/misc_gui.cpp	Thu Jan 18 23:48:04 2007 +0000
@@ -1885,7 +1885,7 @@
 
 				/* Increase or decrease the value and clamp it to extremes */
 				value += (x >= 30) ? step : -step;
-				clamp(value, ce->min, ce->max);
+				value = clamp(value, ce->min, ce->max);
 
 				// take whatever the function returns
 				value = ce->proc(value, (x >= 30) ? 1 : -1);