--- a/src/code/cold-init.lisp
+++ b/src/code/cold-init.lisp
@@ -219,8 +219,11 @@
   ;; FIXME: This list of modes should be defined in one place and
   ;; explicitly shared between here and REINIT.
 
-  ;; Why was this marked #!+alpha?  CMUCL does it here on all architectures
-  (set-floating-point-modes :traps '(:overflow :invalid :divide-by-zero))
+  ;; FIXME: For some unknown reason, NetBSD/x86 won't run with the
+  ;; :invalid trap enabled. That should be fixed, but not today...
+  ;; PEM -- April 5, 2004
+  (set-floating-point-modes
+   :traps '(:overflow #!-netbsd :invalid :divide-by-zero))
 
   (show-and-call !class-finalize)
 
@@ -288,7 +291,11 @@
       ;; LEAST-NEGATIVE-SINGLE-FLOAT, so the :UNDERFLOW exceptions are
       ;; disabled by default. Joe User can explicitly enable them if
       ;; desired.
-      (set-floating-point-modes :traps '(:overflow :invalid :divide-by-zero))
+      ;;
+      ;; see also comment at the previous SET-FLOATING-POINT-MODES
+      ;; call site.
+      (set-floating-point-modes
+       :traps '(:overflow #!-netbsd :invalid :divide-by-zero))
       (sb!thread::maybe-install-futex-functions)))
   (gc-on)
   (gc))