diff --git a/scsh/solaris/signals.scm b/scsh/solaris/signals.scm
index 1a0a09d..c50914d 100644
--- a/scsh/solaris/signals.scm
+++ b/scsh/solaris/signals.scm
@@ -45,6 +45,10 @@
   (lwp	33)	; Special Signal Used By Thread Library 
   (freeze 34)	; Special Signal Used By Cpr 
   (thaw 35)	; Special Signal Used By Cpr 
+  (cancel 36)   ; Thread cancellation signal used by libthread
   )
 
-
+(define signals-ignored-by-default
+  (list signal/chld signal/cont                         ; These are Posix.
+        signal/pwr signal/urg signal/winch              ; These are Solaris.
+        signal/waiting signal/lwp signal/freeze signal/thaw signal/cancel))