diff --git a/basis/unix/signals/signals-tests.factor b/basis/unix/signals/signals-tests.factor
index f09f6dee18..e082d4b6b1 100644
--- a/basis/unix/signals/signals-tests.factor
+++ b/basis/unix/signals/signals-tests.factor
@@ -18,7 +18,7 @@ test-sigusr1-handler SIGUSR1 add-signal-handler
     [ 1 ] [
         sigusr1-count get-global
         SIGUSR1 raise drop
-        0.5 seconds sleep
+        1.0 seconds sleep
         sigusr1-count get-global
         swap -
     ] unit-test
@@ -28,6 +28,6 @@ test-sigusr1-handler SIGUSR1 add-signal-handler
 { 0 } [
     sigusr1-count get-global
     SIGUSR1 raise drop
-    0.5 seconds sleep
+    1.0 seconds sleep
     sigusr1-count get-global swap -
 ] unit-test