diff --git a/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletRequest.java b/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletRequest.java
index c6356c552f..5997ddd730 100644
--- a/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletRequest.java
+++ b/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletRequest.java
@@ -62,7 +62,6 @@ import org.springframework.util.Assert;
 import org.springframework.util.LinkedCaseInsensitiveMap;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
-import org.springframework.util.ObjectUtils;
 import org.springframework.util.StreamUtils;
 import org.springframework.util.StringUtils;
 
@@ -218,8 +217,6 @@ public class MockHttpServletRequest implements HttpServletRequest {
 
 	private Cookie[] cookies;
 
-	private boolean cookieHeaderSet;
-
 	private final Map<String, HeaderValueHolder> headers = new LinkedCaseInsensitiveMap<>();
 
 	private String method;
@@ -931,7 +928,8 @@ public class MockHttpServletRequest implements HttpServletRequest {
 
 	public void setCookies(Cookie... cookies) {
 		this.cookies = cookies;
-		if (!this.cookieHeaderSet && !ObjectUtils.isEmpty(cookies)) {
+		this.headers.remove(HttpHeaders.COOKIE);
+		if (cookies != null) {
 			Arrays.stream(cookies)
 					.map(c -> c.getName() + '=' + (c.getValue() == null ? "" : c.getValue()))
 					.forEach(value -> doAddHeaderValue(HttpHeaders.COOKIE, value, false));
@@ -972,7 +970,6 @@ public class MockHttpServletRequest implements HttpServletRequest {
 			setPreferredLocales(headers.getAcceptLanguageAsLocales());
 		}
 		else {
-			this.cookieHeaderSet = HttpHeaders.COOKIE.equalsIgnoreCase(name);
 			doAddHeaderValue(name, value, false);
 		}
 	}
diff --git a/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletResponse.java b/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletResponse.java
index 2f49908287..2f89c940eb 100644
--- a/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletResponse.java
+++ b/spring-test/src/main/java/org/springframework/mock/web/MockHttpServletResponse.java
@@ -98,8 +98,6 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	private final List<Cookie> cookies = new ArrayList<>();
 
-	private boolean cookieHeaderSet;
-
 	private final Map<String, HeaderValueHolder> headers = new LinkedCaseInsensitiveMap<>();
 
 	private int status = HttpServletResponse.SC_OK;
@@ -323,9 +321,7 @@ public class MockHttpServletResponse implements HttpServletResponse {
 	public void addCookie(Cookie cookie) {
 		Assert.notNull(cookie, "Cookie must not be null");
 		this.cookies.add(cookie);
-		if (!this.cookieHeaderSet) {
-			doAddHeaderValue(HttpHeaders.SET_COOKIE, getCookieHeader(cookie), false);
-		}
+		doAddHeaderValue(HttpHeaders.SET_COOKIE, getCookieHeader(cookie), false);
 	}
 
 	private String getCookieHeader(Cookie cookie) {
@@ -536,13 +532,11 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	@Override
 	public void setHeader(String name, String value) {
-		this.cookieHeaderSet = HttpHeaders.SET_COOKIE.equalsIgnoreCase(name);
 		setHeaderValue(name, value);
 	}
 
 	@Override
 	public void addHeader(String name, String value) {
-		this.cookieHeaderSet = HttpHeaders.SET_COOKIE.equalsIgnoreCase(name);
 		addHeaderValue(name, value);
 	}
 
diff --git a/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletRequest.java b/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletRequest.java
index ad320cad55..6ebc70fce6 100644
--- a/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletRequest.java
+++ b/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletRequest.java
@@ -62,7 +62,6 @@ import org.springframework.util.Assert;
 import org.springframework.util.LinkedCaseInsensitiveMap;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
-import org.springframework.util.ObjectUtils;
 import org.springframework.util.StreamUtils;
 import org.springframework.util.StringUtils;
 
@@ -218,8 +217,6 @@ public class MockHttpServletRequest implements HttpServletRequest {
 
 	private Cookie[] cookies;
 
-	private boolean cookieHeaderSet;
-
 	private final Map<String, HeaderValueHolder> headers = new LinkedCaseInsensitiveMap<>();
 
 	private String method;
@@ -931,7 +928,8 @@ public class MockHttpServletRequest implements HttpServletRequest {
 
 	public void setCookies(Cookie... cookies) {
 		this.cookies = cookies;
-		if (!this.cookieHeaderSet && !ObjectUtils.isEmpty(cookies)) {
+		this.headers.remove(HttpHeaders.COOKIE);
+		if (cookies != null) {
 			Arrays.stream(cookies)
 					.map(c -> c.getName() + '=' + (c.getValue() == null ? "" : c.getValue()))
 					.forEach(value -> doAddHeaderValue(HttpHeaders.COOKIE, value, false));
@@ -972,7 +970,6 @@ public class MockHttpServletRequest implements HttpServletRequest {
 			setPreferredLocales(headers.getAcceptLanguageAsLocales());
 		}
 		else {
-			this.cookieHeaderSet = HttpHeaders.COOKIE.equalsIgnoreCase(name);
 			doAddHeaderValue(name, value, false);
 		}
 	}
diff --git a/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletResponse.java b/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletResponse.java
index ce6b73b218..fc9cc8279f 100644
--- a/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletResponse.java
+++ b/spring-web/src/test/java/org/springframework/mock/web/test/MockHttpServletResponse.java
@@ -98,8 +98,6 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	private final List<Cookie> cookies = new ArrayList<>();
 
-	private boolean cookieHeaderSet;
-
 	private final Map<String, HeaderValueHolder> headers = new LinkedCaseInsensitiveMap<>();
 
 	private int status = HttpServletResponse.SC_OK;
@@ -323,9 +321,7 @@ public class MockHttpServletResponse implements HttpServletResponse {
 	public void addCookie(Cookie cookie) {
 		Assert.notNull(cookie, "Cookie must not be null");
 		this.cookies.add(cookie);
-		if (!this.cookieHeaderSet) {
-			doAddHeaderValue(HttpHeaders.SET_COOKIE, getCookieHeader(cookie), false);
-		}
+		doAddHeaderValue(HttpHeaders.SET_COOKIE, getCookieHeader(cookie), false);
 	}
 
 	private String getCookieHeader(Cookie cookie) {
@@ -536,13 +532,11 @@ public class MockHttpServletResponse implements HttpServletResponse {
 
 	@Override
 	public void setHeader(String name, String value) {
-		this.cookieHeaderSet = HttpHeaders.SET_COOKIE.equalsIgnoreCase(name);
 		setHeaderValue(name, value);
 	}
 
 	@Override
 	public void addHeader(String name, String value) {
-		this.cookieHeaderSet = HttpHeaders.SET_COOKIE.equalsIgnoreCase(name);
 		addHeaderValue(name, value);
 	}