diff --git a/spring-test/src/test/java/org/springframework/test/web/servlet/samples/spr/ServletRequestDataBinderIntegrationTests.java b/spring-test/src/test/java/org/springframework/test/web/servlet/samples/spr/ServletRequestDataBinderIntegrationTests.java
index 1750d4a8950..64d7d5f434b 100644
--- a/spring-test/src/test/java/org/springframework/test/web/servlet/samples/spr/ServletRequestDataBinderIntegrationTests.java
+++ b/spring-test/src/test/java/org/springframework/test/web/servlet/samples/spr/ServletRequestDataBinderIntegrationTests.java
@@ -19,7 +19,6 @@ package org.springframework.test.web.servlet.samples.spr;
 import java.util.List;
 import java.util.Map;
 
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.test.context.junit.jupiter.web.SpringJUnitWebConfig;
@@ -57,7 +56,6 @@ class ServletRequestDataBinderIntegrationTests {
 				.andExpect(content().string("valueB"));
 	}
 
-	@Disabled("see gh-34121")
 	@Test // gh-34121
 	void postArrayWithEmptyIndex(WebApplicationContext wac) throws Exception {
 		MockMvc mockMvc = webAppContextSetup(wac).build();
@@ -88,7 +86,6 @@ class ServletRequestDataBinderIntegrationTests {
 				.andExpect(content().string("valueB"));
 	}
 
-	@Disabled("see gh-34121")
 	@Test // gh-34121
 	void postListWithEmptyIndex(WebApplicationContext wac) throws Exception {
 		MockMvc mockMvc = webAppContextSetup(wac).build();
diff --git a/spring-web/src/main/java/org/springframework/web/bind/ServletRequestDataBinder.java b/spring-web/src/main/java/org/springframework/web/bind/ServletRequestDataBinder.java
index 07ae3555666..6add6a2dbb9 100644
--- a/spring-web/src/main/java/org/springframework/web/bind/ServletRequestDataBinder.java
+++ b/spring-web/src/main/java/org/springframework/web/bind/ServletRequestDataBinder.java
@@ -244,6 +244,10 @@ public class ServletRequestDataBinder extends WebDataBinder {
 		@Nullable
 		protected Object getRequestParameter(String name, Class<?> type) {
 			Object value = this.request.getParameterValues(name);
+			if (value == null && !name.endsWith ("[]") &&
+					(List.class.isAssignableFrom(type) || type.isArray())) {
+				value = this.request.getParameterValues(name + "[]");
+			}
 			return (ObjectUtils.isArray(value) && Array.getLength(value) == 1 ? Array.get(value, 0) : value);
 		}
 
diff --git a/spring-web/src/test/java/org/springframework/web/bind/ServletRequestDataBinderTests.java b/spring-web/src/test/java/org/springframework/web/bind/ServletRequestDataBinderTests.java
index adbae1ddc62..fa10f23a045 100644
--- a/spring-web/src/test/java/org/springframework/web/bind/ServletRequestDataBinderTests.java
+++ b/spring-web/src/test/java/org/springframework/web/bind/ServletRequestDataBinderTests.java
@@ -93,6 +93,32 @@ class ServletRequestDataBinderTests {
 		assertThat(target.isPostProcessed()).isFalse();
 	}
 
+	@Test
+	public void testFieldWithArrayIndex() {
+		TestBean target = new TestBean();
+		ServletRequestDataBinder binder = new ServletRequestDataBinder(target);
+		binder.setIgnoreUnknownFields(false);
+
+		MockHttpServletRequest request = new MockHttpServletRequest();
+		request.addParameter("stringArray[0]", "ONE");
+		request.addParameter("stringArray[1]", "TWO");
+		binder.bind(request);
+		assertThat(target.getStringArray()).containsExactly("ONE", "TWO");
+	}
+
+	@Test
+	public void testFieldWithEmptyArrayIndex() {
+		TestBean target = new TestBean();
+		ServletRequestDataBinder binder = new ServletRequestDataBinder(target);
+		binder.setIgnoreUnknownFields(false);
+
+		MockHttpServletRequest request = new MockHttpServletRequest();
+		request.addParameter("stringArray[]", "ONE");
+		request.addParameter("stringArray[]", "TWO");
+		binder.bind(request);
+		assertThat(target.getStringArray()).containsExactly("ONE", "TWO");
+	}
+
 	@Test
 	void testFieldDefault() {
 		TestBean target = new TestBean();