diff --git a/convert.go b/convert.go
index 065175f..9e6071d 100644
--- a/convert.go
+++ b/convert.go
@@ -4,19 +4,19 @@ type intConverter func(interface{}) int64
 
 func getIntConverter(data interface{}) intConverter {
 	switch data.(type) {
-	case (int):
+	case int:
 		return func(i interface{}) int64 {
 			return int64(i.(int))
 		}
-	case (int8):
+	case int8:
 		return func(i interface{}) int64 {
 			return int64(i.(int8))
 		}
-	case (int16):
+	case int16:
 		return func(i interface{}) int64 {
 			return int64(i.(int16))
 		}
-	case (int32):
+	case int32:
 		return func(i interface{}) int64 {
 			return int64(i.(int32))
 		}
@@ -31,19 +31,19 @@ type uintConverter func(interface{}) uint64
 
 func getUIntConverter(data interface{}) uintConverter {
 	switch data.(type) {
-	case (uint):
+	case uint:
 		return func(i interface{}) uint64 {
 			return uint64(i.(uint))
 		}
-	case (uint8):
+	case uint8:
 		return func(i interface{}) uint64 {
 			return uint64(i.(uint8))
 		}
-	case (uint16):
+	case uint16:
 		return func(i interface{}) uint64 {
 			return uint64(i.(uint16))
 		}
-	case (uint32):
+	case uint32:
 		return func(i interface{}) uint64 {
 			return uint64(i.(uint32))
 		}
@@ -58,7 +58,7 @@ type floatConverter func(interface{}) float64
 
 func getFloatConverter(data interface{}) floatConverter {
 	switch data.(type) {
-	case (float32):
+	case float32:
 		return func(i interface{}) float64 {
 			return float64(i.(float32))
 		}