diff --git a/gospin.go b/gospin.go
index 0bc2fb6..602637f 100644
--- a/gospin.go
+++ b/gospin.go
@@ -134,7 +134,7 @@ func (s *Spinner) walk(seq *string, step *int, str *string, start int, level int
 		} else {
 			// replace parameter string e.g. {hello|what} with selectedOpt
 			stepDiff := len([]rune(*str)[*step:start+1]) - len([]rune(selected))
-			*str = strings.Replace(*str, string([]rune(*str)[*step:start+1]), selected, 1)
+			*str = string([]rune(*str)[:*step]) + selected + string([]rune(*str)[start+1:])
 			*step = *step - stepDiff
 			start = start - stepDiff
 		}
diff --git a/gospin_test.go b/gospin_test.go
index 47f5f15..df981dc 100644
--- a/gospin_test.go
+++ b/gospin_test.go
@@ -33,6 +33,14 @@ func TestSpinner_Spin(t *testing.T) {
 		assert.Error(t, err)
 	}
 	assert.Equal(t, expected, got, "should be equal")
+
+	nested := "The {slow|quick} {brown|blue and {red|yellow}} {fox|deer} {gracefully |}jumps over the {{slow|quick} {fox|deer}}"
+	expected = "The slow blue and yellow fox jumps over the quick fox"
+	got, err = spinner.Spin(nested)
+	if err != nil {
+		assert.Error(t, err)
+	}
+	assert.Equal(t, expected, got, "should be equal")
 }
 
 func TestSpinner_Spin_UTF8(t *testing.T) {
@@ -62,6 +70,14 @@ func TestSpinner_Spin_UTF8(t *testing.T) {
 		assert.Error(t, err)
 	}
 	assert.Equal(t, expected, got, "should be equal")
+
+	nested := "{Медленный|Быстрый} {бурый|серый с {рыжими пятнами|золотистыми пятнами}} {лис|олень} {с легкостью |}перепрыгнул через {{сонного|ленивого} {волка|оленя}}"
+	expected = "Медленный бурый олень перепрыгнул через сонного оленя"
+	got, err = spinner.Spin(nested)
+	if err != nil {
+		assert.Error(t, err)
+	}
+	assert.Equal(t, expected, got, "should be equal")
 }
 
 func TestSpinner_Spin_EndCharFirstChar(t *testing.T) {