diff --git a/src/xschem.tcl b/src/xschem.tcl
index 4a908d8c..f2688bd2 100644
--- a/src/xschem.tcl
+++ b/src/xschem.tcl
@@ -628,9 +628,6 @@ proc from_eng {i} {
 ## convert number to engineering form
 proc to_eng {args} {
   set suffix {}
-  if { [catch {[uplevel #0 expr [join $args]]} i] } {
-    return $args
-  }
   set i [uplevel #0 expr [join $args]]
   set absi [expr {abs($i)}]