diff --git a/Makefile b/Makefile
index 7717c1e..7cfec87 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ all: test
 
 .root/src/$(PKG):
 	mkdir -p $@
-	for i in $$PWD/* ; do ln -s $$i $@/`basename $$i` ; done 
+	for i in $$PWD/* ; do ln -s $$i $@/`basename $$i` ; done
 
 root: .root/src/$(PKG)
 
@@ -27,7 +27,7 @@ generate: root build
 		.root/src/$(PKG)/tests/custom_map_key_type.go \
 		.root/src/$(PKG)/tests/embedded_type.go
 
-	.root/bin/easyjson -all .root/src/$(PKG)/tests/data.go 
+	.root/bin/easyjson -all .root/src/$(PKG)/tests/data.go
 	.root/bin/easyjson -all .root/src/$(PKG)/tests/nothing.go
 	.root/bin/easyjson -all .root/src/$(PKG)/tests/errors.go
 	.root/bin/easyjson -snake_case .root/src/$(PKG)/tests/snake.go
diff --git a/gen/decoder.go b/gen/decoder.go
index 5dc1249..606602f 100644
--- a/gen/decoder.go
+++ b/gen/decoder.go
@@ -114,7 +114,7 @@ func (g *Generator) genTypeDecoderNoCheck(t reflect.Type, out string, tags field
 		tmpVar := g.uniqueVarName()
 		elem := t.Elem()
 
-		if elem.Kind() == reflect.Uint8 {
+		if elem.Kind() == reflect.Uint8 && elem.Name() == "uint8" {
 			fmt.Fprintln(g.out, ws+"if in.IsNull() {")
 			fmt.Fprintln(g.out, ws+"  in.Skip()")
 			fmt.Fprintln(g.out, ws+"  "+out+" = nil")
@@ -161,7 +161,7 @@ func (g *Generator) genTypeDecoderNoCheck(t reflect.Type, out string, tags field
 		iterVar := g.uniqueVarName()
 		elem := t.Elem()
 
-		if elem.Kind() == reflect.Uint8 {
+		if elem.Kind() == reflect.Uint8 && elem.Name() == "uint8" {
 			fmt.Fprintln(g.out, ws+"if in.IsNull() {")
 			fmt.Fprintln(g.out, ws+"  in.Skip()")
 			fmt.Fprintln(g.out, ws+"} else {")
diff --git a/gen/encoder.go b/gen/encoder.go
index 293a66a..b2be743 100644
--- a/gen/encoder.go
+++ b/gen/encoder.go
@@ -137,7 +137,7 @@ func (g *Generator) genTypeEncoderNoCheck(t reflect.Type, in string, tags fieldT
 		iVar := g.uniqueVarName()
 		vVar := g.uniqueVarName()
 
-		if t.Elem().Kind() == reflect.Uint8 {
+		if t.Elem().Kind() == reflect.Uint8 && elem.Name() == "uint8" {
 			fmt.Fprintln(g.out, ws+"out.Base64Bytes("+in+")")
 		} else {
 			if !assumeNonEmpty {
@@ -166,7 +166,7 @@ func (g *Generator) genTypeEncoderNoCheck(t reflect.Type, in string, tags fieldT
 		elem := t.Elem()
 		iVar := g.uniqueVarName()
 
-		if t.Elem().Kind() == reflect.Uint8 {
+		if t.Elem().Kind() == reflect.Uint8 && elem.Name() == "uint8" {
 			fmt.Fprintln(g.out, ws+"out.Base64Bytes("+in+"[:])")
 		} else {
 			fmt.Fprintln(g.out, ws+"out.RawByte('[')")
diff --git a/tests/basic_test.go b/tests/basic_test.go
index ab166f3..3b1cc65 100644
--- a/tests/basic_test.go
+++ b/tests/basic_test.go
@@ -50,6 +50,8 @@ var testCases = []struct {
 	{&mapUintptrStringValue, mapUintptrStringValueString},
 	{&intKeyedMapStructValue, intKeyedMapStructValueString},
 	{&intArrayStructValue, intArrayStructValueString},
+	{&myUInt8SliceValue, myUInt8SliceString},
+	{&myUInt8ArrayValue, myUInt8ArrayString},
 }
 
 func TestMarshal(t *testing.T) {
diff --git a/tests/data.go b/tests/data.go
index 8d5132d..6ae90a0 100644
--- a/tests/data.go
+++ b/tests/data.go
@@ -784,3 +784,19 @@ var intArrayStructValueString = `{` +
 	`"pointer":[1,2],` +
 	`"value":[1,2]` +
 	`}`
+
+type MyUInt8 uint8
+
+//easyjson:json
+type MyUInt8Slice []MyUInt8
+
+var myUInt8SliceValue = MyUInt8Slice{1, 2, 3, 4, 5}
+
+var myUInt8SliceString = `[1,2,3,4,5]`
+
+//easyjson:json
+type MyUInt8Array [2]MyUInt8
+
+var myUInt8ArrayValue = MyUInt8Array{1, 2}
+
+var myUInt8ArrayString = `[1,2]`