diff --git a/Library/Homebrew/test/cmd/--prefix_spec.rb b/Library/Homebrew/test/cmd/--prefix_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..80ef73a975fd0a326ffcb0b1d9f5ccc4a8ea1ae5
--- /dev/null
+++ b/Library/Homebrew/test/cmd/--prefix_spec.rb
@@ -0,0 +1,15 @@
+describe "brew --prefix", :integration_test do
+  it "prints the Homebrew prefix when no argument is given" do
+    expect { brew "--prefix" }
+      .to output("#{HOMEBREW_PREFIX}\n").to_stdout
+      .and not_to_output.to_stderr
+      .and be_a_success
+  end
+
+  it "prints a given Formula's prefix" do
+    expect { brew "--prefix", testball }
+      .to output(%r{#{HOMEBREW_CELLAR}/testball}).to_stdout
+      .and not_to_output.to_stderr
+      .and be_a_success
+  end
+end
diff --git a/Library/Homebrew/test/prefix_formula_test.rb b/Library/Homebrew/test/prefix_formula_test.rb
deleted file mode 100644
index eb5970d3e2cc14fbb2f844976ec2492c777bc4b2..0000000000000000000000000000000000000000
--- a/Library/Homebrew/test/prefix_formula_test.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-require "testing_env"
-
-class IntegrationCommandTestPrefixFormula < IntegrationCommandTestCase
-  def test_prefix_formula
-    assert_match "#{HOMEBREW_CELLAR}/testball",
-                 cmd("--prefix", testball)
-  end
-end
diff --git a/Library/Homebrew/test/prefix_test.rb b/Library/Homebrew/test/prefix_test.rb
deleted file mode 100644
index a3ae755426e2f9346e957c94afe817f7f9f985df..0000000000000000000000000000000000000000
--- a/Library/Homebrew/test/prefix_test.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-require "testing_env"
-
-class IntegrationCommandTestPrefix < IntegrationCommandTestCase
-  def test_prefix
-    assert_equal HOMEBREW_PREFIX.to_s,
-                 cmd("--prefix")
-  end
-end