diff --git a/Library/Homebrew/test/system_command_spec.rb b/Library/Homebrew/test/system_command_spec.rb
index 4a800c9184..232d4d84a6 100644
--- a/Library/Homebrew/test/system_command_spec.rb
+++ b/Library/Homebrew/test/system_command_spec.rb
@@ -195,7 +195,7 @@ describe SystemCommand do
         let(:options) do
           { args: [
             "-c",
-            "for i in $(seq 1 2 5); do echo $i; sleep 1; echo $(($i + 1)) >&2; done",
+            "for i in $(seq 1 2 5); do echo $i; sleep 0.1; echo $(($i + 1)) >&2; sleep 0.1; done",
           ] }
         end