diff --git a/fmt_progress_test.go b/fmt_progress_test.go
index 53780be..690d7a7 100644
--- a/fmt_progress_test.go
+++ b/fmt_progress_test.go
@@ -82,7 +82,8 @@ func FeatureContext(s *godog.Suite) {
 
 `
 
-	require.True(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.True(t, failed)
 
 	actual := buf.String()
 	assert.Equal(t, expected, actual)
@@ -107,10 +108,11 @@ func TestProgressFormatterWhenStepPanics(t *testing.T) {
 		},
 	}
 
-	require.True(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.True(t, failed)
 
 	actual := buf.String()
-	assert.Contains(t, actual, "godog/fmt_progress_test.go:106")
+	assert.Contains(t, actual, "godog/fmt_progress_test.go:107")
 }
 
 func TestProgressFormatterWithPassingMultisteps(t *testing.T) {
@@ -135,7 +137,8 @@ func TestProgressFormatterWithPassingMultisteps(t *testing.T) {
 		},
 	}
 
-	assert.False(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.False(t, failed)
 }
 
 func TestProgressFormatterWithFailingMultisteps(t *testing.T) {
@@ -160,7 +163,8 @@ func TestProgressFormatterWithFailingMultisteps(t *testing.T) {
 		},
 	}
 
-	require.True(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.True(t, failed)
 
 	expected := `.F 2
 
@@ -202,7 +206,8 @@ func TestProgressFormatterWithPanicInMultistep(t *testing.T) {
 		},
 	}
 
-	assert.True(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.True(t, failed)
 }
 
 func TestProgressFormatterMultistepTemplates(t *testing.T) {
@@ -226,7 +231,8 @@ func TestProgressFormatterMultistepTemplates(t *testing.T) {
 		},
 	}
 
-	require.False(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.False(t, failed)
 
 	expected := `.U 2
 
@@ -291,7 +297,8 @@ Feature: basic
 		},
 	}
 
-	assert.False(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.False(t, failed)
 }
 
 func TestProgressFormatterWhenMultiStepHasStepWithArgument(t *testing.T) {
@@ -326,7 +333,8 @@ Feature: basic
 		},
 	}
 
-	require.True(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", w) })
+	require.True(t, failed)
 
 	expected := `.F 2
 
diff --git a/run.go b/run.go
index 874c684..f50851b 100644
--- a/run.go
+++ b/run.go
@@ -110,23 +110,6 @@ func (r *runner) concurrent(rate int, formatterFn func() Formatter) (failed bool
 	return
 }
 
-func (r *runner) run() bool {
-	suite := &Suite{
-		fmt:           r.fmt,
-		randomSeed:    r.randomSeed,
-		stopOnFailure: r.stopOnFailure,
-		strict:        r.strict,
-		features:      r.features,
-	}
-	r.initializer(suite)
-
-	r.fmt.TestRunStarted()
-	suite.run()
-	r.fmt.Summary()
-
-	return suite.failed
-}
-
 // RunWithOptions is same as Run function, except
 // it uses Options provided in order to run the
 // test suite without parsing flags
@@ -169,10 +152,10 @@ func RunWithOptions(suite string, contextInitializer func(suite *Suite), opt Opt
 		}
 	}
 
-	if opt.Concurrency > 1 && !supportsConcurrency(opt.Format) {
-		fmt.Fprintln(os.Stderr, fmt.Errorf("format \"%s\" does not support concurrent execution", opt.Format))
-		return exitOptionError
+	if opt.Concurrency < 1 {
+		opt.Concurrency = 1
 	}
+
 	formatter := FindFmt(opt.Format)
 	if nil == formatter {
 		var names []string
@@ -214,12 +197,7 @@ func RunWithOptions(suite string, contextInitializer func(suite *Suite), opt Opt
 	_, filename, _, _ := runtime.Caller(1)
 	os.Setenv("GODOG_TESTED_PACKAGE", runsFromPackage(filename))
 
-	var failed bool
-	if opt.Concurrency > 1 {
-		failed = r.concurrent(opt.Concurrency, func() Formatter { return formatter(suite, output) })
-	} else {
-		failed = r.run()
-	}
+	failed := r.concurrent(opt.Concurrency, func() Formatter { return formatter(suite, output) })
 
 	// @TODO: should prevent from having these
 	os.Setenv("GODOG_SEED", "")
@@ -275,18 +253,3 @@ func Run(suite string, contextInitializer func(suite *Suite)) int {
 
 	return RunWithOptions(suite, contextInitializer, opt)
 }
-
-func supportsConcurrency(format string) bool {
-	switch format {
-	case "progress", "junit":
-		return true
-	case "events":
-		return true
-	case "cucumber":
-		return true
-	case "pretty":
-		return true
-	default:
-		return true // enables concurrent custom formatters to work
-	}
-}
diff --git a/run_test.go b/run_test.go
index 223f7a9..abf485d 100644
--- a/run_test.go
+++ b/run_test.go
@@ -75,10 +75,12 @@ func TestFailsOrPassesBasedOnStrictModeWhenHasPendingSteps(t *testing.T) {
 		},
 	}
 
-	assert.False(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", ioutil.Discard) })
+	require.False(t, failed)
 
 	r.strict = true
-	assert.True(t, r.run())
+	failed = r.concurrent(1, func() Formatter { return progressFunc("progress", ioutil.Discard) })
+	require.True(t, failed)
 }
 
 func TestFailsOrPassesBasedOnStrictModeWhenHasUndefinedSteps(t *testing.T) {
@@ -98,10 +100,12 @@ func TestFailsOrPassesBasedOnStrictModeWhenHasUndefinedSteps(t *testing.T) {
 		},
 	}
 
-	assert.False(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", ioutil.Discard) })
+	require.False(t, failed)
 
 	r.strict = true
-	assert.True(t, r.run())
+	failed = r.concurrent(1, func() Formatter { return progressFunc("progress", ioutil.Discard) })
+	require.True(t, failed)
 }
 
 func TestShouldFailOnError(t *testing.T) {
@@ -121,7 +125,8 @@ func TestShouldFailOnError(t *testing.T) {
 		},
 	}
 
-	assert.True(t, r.run())
+	failed := r.concurrent(1, func() Formatter { return progressFunc("progress", ioutil.Discard) })
+	require.True(t, failed)
 }
 
 func TestFailsWithUnknownFormatterOptionError(t *testing.T) {