diff --git a/web/src/main/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriter.java b/web/src/main/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriter.java
index 0f65321d8cd..d7874daa323 100644
--- a/web/src/main/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriter.java
+++ b/web/src/main/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -28,7 +28,7 @@
  */
 public class XContentTypeOptionsServerHttpHeadersWriter implements ServerHttpHeadersWriter {
 
-	public static final String X_CONTENT_OPTIONS = "X-Content-Options";
+	public static final String X_CONTENT_OPTIONS = "X-Content-Type-Options";
 
 	public static final String NOSNIFF = "nosniff";
 
diff --git a/web/src/test/java/org/springframework/security/web/server/header/ContentTypeOptionsServerHttpHeadersWriterTests.java b/web/src/test/java/org/springframework/security/web/server/header/ContentTypeOptionsServerHttpHeadersWriterTests.java
new file mode 100644
index 00000000000..1fa585fe34f
--- /dev/null
+++ b/web/src/test/java/org/springframework/security/web/server/header/ContentTypeOptionsServerHttpHeadersWriterTests.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2002-2023 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.security.web.server.header;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.mock.http.server.reactive.MockServerHttpRequest;
+import org.springframework.mock.web.server.MockServerWebExchange;
+import org.springframework.web.server.ServerWebExchange;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link ContentTypeOptionsServerHttpHeadersWriter}
+ *
+ * @author Marcus da Coregio
+ */
+class ContentTypeOptionsServerHttpHeadersWriterTests {
+
+	ContentTypeOptionsServerHttpHeadersWriter writer = new ContentTypeOptionsServerHttpHeadersWriter();
+
+	ServerWebExchange exchange = MockServerWebExchange.from(MockServerHttpRequest.get("/").build());
+
+	HttpHeaders headers = this.exchange.getResponse().getHeaders();
+
+	@Test
+	void writeHeadersWhenNoHeadersThenWriteHeaders() {
+		this.writer.writeHttpHeaders(this.exchange);
+		assertThat(this.headers).hasSize(1);
+		assertThat(this.headers.get(ContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS))
+				.containsOnly(ContentTypeOptionsServerHttpHeadersWriter.NOSNIFF);
+	}
+
+	@Test
+	void writeHeadersWhenHeaderWrittenThenDoesNotOverride() {
+		String headerValue = "value";
+		this.headers.set(ContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS, headerValue);
+		this.writer.writeHttpHeaders(this.exchange);
+		assertThat(this.headers).hasSize(1);
+		assertThat(this.headers.get(ContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS))
+				.containsOnly(headerValue);
+	}
+
+	@Test
+	void constantsMatchExpectedHeaderAndValue() {
+		assertThat(ContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS).isEqualTo("X-Content-Type-Options");
+		assertThat(ContentTypeOptionsServerHttpHeadersWriter.NOSNIFF).isEqualTo("nosniff");
+	}
+
+}
diff --git a/web/src/test/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriterTests.java b/web/src/test/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriterTests.java
index a48583ddc33..8c9de1d4335 100644
--- a/web/src/test/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriterTests.java
+++ b/web/src/test/java/org/springframework/security/web/server/header/XContentTypeOptionsServerHttpHeadersWriterTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -26,33 +26,41 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
+ * Tests for {@link XContentTypeOptionsServerHttpHeadersWriter}
+ *
  * @author Rob Winch
  * @since 5.0
  */
 public class XContentTypeOptionsServerHttpHeadersWriterTests {
 
-	ContentTypeOptionsServerHttpHeadersWriter writer = new ContentTypeOptionsServerHttpHeadersWriter();
+	XContentTypeOptionsServerHttpHeadersWriter writer = new XContentTypeOptionsServerHttpHeadersWriter();
 
 	ServerWebExchange exchange = MockServerWebExchange.from(MockServerHttpRequest.get("/").build());
 
 	HttpHeaders headers = this.exchange.getResponse().getHeaders();
 
 	@Test
-	public void writeHeadersWhenNoHeadersThenWriteHeaders() {
+	public void writeHeadersWhenNoHeadersThenWriteHeadersForXContentTypeOptionsServerHttpHeadersWriter() {
 		this.writer.writeHttpHeaders(this.exchange);
 		assertThat(this.headers).hasSize(1);
-		assertThat(this.headers.get(ContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS))
-				.containsOnly(ContentTypeOptionsServerHttpHeadersWriter.NOSNIFF);
+		assertThat(this.headers.get(XContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS))
+				.containsOnly(XContentTypeOptionsServerHttpHeadersWriter.NOSNIFF);
 	}
 
 	@Test
-	public void writeHeadersWhenHeaderWrittenThenDoesNotOverrride() {
+	public void writeHeadersWhenHeaderWrittenThenDoesNotOverrideForXContentTypeOptionsServerHttpHeadersWriter() {
 		String headerValue = "value";
-		this.headers.set(ContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS, headerValue);
+		this.headers.set(XContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS, headerValue);
 		this.writer.writeHttpHeaders(this.exchange);
 		assertThat(this.headers).hasSize(1);
-		assertThat(this.headers.get(ContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS))
+		assertThat(this.headers.get(XContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS))
 				.containsOnly(headerValue);
 	}
 
+	@Test
+	public void constantsMatchExpectedHeaderAndValueForXContentTypeOptionsServerHttpHeadersWriter() {
+		assertThat(XContentTypeOptionsServerHttpHeadersWriter.X_CONTENT_OPTIONS).isEqualTo("X-Content-Type-Options");
+		assertThat(XContentTypeOptionsServerHttpHeadersWriter.NOSNIFF).isEqualTo("nosniff");
+	}
+
 }