diff --git a/spring-web/src/main/java/org/springframework/http/converter/FormHttpMessageConverter.java b/spring-web/src/main/java/org/springframework/http/converter/FormHttpMessageConverter.java
index 1570b934d01..eb4909015ff 100644
--- a/spring-web/src/main/java/org/springframework/http/converter/FormHttpMessageConverter.java
+++ b/spring-web/src/main/java/org/springframework/http/converter/FormHttpMessageConverter.java
@@ -25,7 +25,7 @@ import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashMap;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import javax.mail.internet.MimeUtility;
@@ -351,11 +351,11 @@ public class FormHttpMessageConverter implements HttpMessageConverter<MultiValue
 			HttpOutputMessage outputMessage) throws IOException {
 
 		final byte[] boundary = generateMultipartBoundary();
-		Map<String, String> parameters = new HashMap<>(2);
-		parameters.put("boundary", new String(boundary, "US-ASCII"));
+		Map<String, String> parameters = new LinkedHashMap<>(2);
 		if (!isFilenameCharsetSet()) {
 			parameters.put("charset", this.charset.name());
 		}
+		parameters.put("boundary", new String(boundary, "US-ASCII"));
 
 		MediaType contentType = new MediaType(MediaType.MULTIPART_FORM_DATA, parameters);
 		HttpHeaders headers = outputMessage.getHeaders();
diff --git a/spring-web/src/test/java/org/springframework/http/converter/FormHttpMessageConverterTests.java b/spring-web/src/test/java/org/springframework/http/converter/FormHttpMessageConverterTests.java
index 5142eac379e..ceaf639cb5c 100644
--- a/spring-web/src/test/java/org/springframework/http/converter/FormHttpMessageConverterTests.java
+++ b/spring-web/src/test/java/org/springframework/http/converter/FormHttpMessageConverterTests.java
@@ -30,6 +30,8 @@ import org.apache.commons.fileupload.FileItemFactory;
 import org.apache.commons.fileupload.FileUpload;
 import org.apache.commons.fileupload.RequestContext;
 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
+import org.hamcrest.CoreMatchers;
+import org.hamcrest.Matchers;
 import org.junit.Test;
 
 import org.springframework.core.io.ClassPathResource;
@@ -148,7 +150,8 @@ public class FormHttpMessageConverterTests {
 		this.converter.write(parts, new MediaType("multipart", "form-data", StandardCharsets.UTF_8), outputMessage);
 
 		final MediaType contentType = outputMessage.getHeaders().getContentType();
-		assertNotNull("No boundary found", contentType.getParameter("boundary"));
+		// SPR-17030
+		assertThat(contentType.getParameters().keySet(), Matchers.contains("charset", "boundary"));
 
 		// see if Commons FileUpload can read what we wrote
 		FileItemFactory fileItemFactory = new DiskFileItemFactory();