diff --git a/src/main/java/org/springframework/data/redis/connection/BitFieldSubCommands.java b/src/main/java/org/springframework/data/redis/connection/BitFieldSubCommands.java
index 5aadd0383..a551b7638 100644
--- a/src/main/java/org/springframework/data/redis/connection/BitFieldSubCommands.java
+++ b/src/main/java/org/springframework/data/redis/connection/BitFieldSubCommands.java
@@ -28,6 +28,7 @@ import org.springframework.util.Assert;
  * The actual {@code BITFIELD} command representation holding several {@link BitFieldSubCommand}s to execute.
  *
  * @author Christoph Strobl
+ * @author Qiang Lee
  * @since 2.1
  */
 public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
@@ -88,7 +89,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 	/**
 	 * Create new {@link BitFieldSubCommands} adding given {@link BitFieldSet} to the sub commands.
 	 *
-	 * @param get must not be {@literal null}.
+	 * @param set must not be {@literal null}.
 	 * @return
 	 */
 	protected BitFieldSubCommands set(BitFieldSet set) {
@@ -434,7 +435,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 		private final boolean signed;
 		private final int bits;
 
-		private BitFieldType(Boolean signed, Integer bits) {
+		private BitFieldType(boolean signed, Integer bits) {
 
 			this.signed = signed;
 			this.bits = bits;
diff --git a/src/test/java/org/springframework/data/redis/connection/BitFieldSubCommandsUnitTests.java b/src/test/java/org/springframework/data/redis/connection/BitFieldSubCommandsUnitTests.java
new file mode 100644
index 000000000..2d1eb09dc
--- /dev/null
+++ b/src/test/java/org/springframework/data/redis/connection/BitFieldSubCommandsUnitTests.java
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.redis.connection;
+
+import static org.assertj.core.api.Assertions.*;
+
+import org.junit.Test;
+
+import org.springframework.data.redis.connection.BitFieldSubCommands.BitFieldType;
+
+/**
+ * Unit tests for {@link BitFieldSubCommands}.
+ *
+ * @author Mark Paluch
+ */
+public class BitFieldSubCommandsUnitTests {
+
+	@Test // DATAREDIS-971
+	public void shouldCreateSignedBitFieldType() {
+
+		BitFieldType type = BitFieldType.signed(10);
+
+		assertThat(type.isSigned()).isTrue();
+		assertThat(type.getBits()).isEqualTo(10);
+	}
+
+	@Test // DATAREDIS-971
+	public void shouldCreateUnsignedBitFieldType() {
+
+		BitFieldType type = BitFieldType.unsigned(10);
+
+		assertThat(type.isSigned()).isFalse();
+		assertThat(type.getBits()).isEqualTo(10);
+	}
+}