diff --git a/org.springframework.context/src/main/java/org/springframework/scheduling/config/ExecutorBeanDefinitionParser.java b/org.springframework.context/src/main/java/org/springframework/scheduling/config/ExecutorBeanDefinitionParser.java
index 563a3b1b5b8..ab0dc76b586 100644
--- a/org.springframework.context/src/main/java/org/springframework/scheduling/config/ExecutorBeanDefinitionParser.java
+++ b/org.springframework.context/src/main/java/org/springframework/scheduling/config/ExecutorBeanDefinitionParser.java
@@ -53,20 +53,20 @@ public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionPa
 			builder.addPropertyValue("queueCapacity", queueCapacity);
 		}
 		this.configureRejectionPolicy(element, builder);
-		String size = element.getAttribute("size");
-		if (!StringUtils.hasText(size)) {
+		String poolSize = element.getAttribute("pool-size");
+		if (!StringUtils.hasText(poolSize)) {
 			return;
 		}
 		Integer[] range = null;
 		try {
-			int separatorIndex = size.indexOf('-');
+			int separatorIndex = poolSize.indexOf('-');
 			if (separatorIndex != -1) {
 				range = new Integer[2];
-				range[0] = Integer.valueOf(size.substring(0, separatorIndex));
-				range[1] = Integer.valueOf(size.substring(separatorIndex + 1, size.length()));
+				range[0] = Integer.valueOf(poolSize.substring(0, separatorIndex));
+				range[1] = Integer.valueOf(poolSize.substring(separatorIndex + 1, poolSize.length()));
 				if (range[0] > range[1]) {
 					parserContext.getReaderContext().error(
-							"Lower bound of size range must not exceed the upper bound.", element);
+							"Lower bound of pool-size range must not exceed the upper bound.", element);
 				}
 				if (!StringUtils.hasText(queueCapacity)) {
 					// no queue-capacity provided, so unbounded
@@ -84,13 +84,13 @@ public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionPa
 				}
 			}
 			else {
-				Integer value = Integer.valueOf(size);
+				Integer value = Integer.valueOf(poolSize);
 				range = new Integer[] {value, value};
 			}
 		}
 		catch (NumberFormatException ex) {
-			parserContext.getReaderContext().error("Invalid size value [" + size + "]: only " +
-					"single maximum integer (e.g. \"5\") and minimum-maximum combo (e.g. \"3-5\") supported.",
+			parserContext.getReaderContext().error("Invalid pool-size value [" + poolSize + "]: only single " +
+					"maximum integer (e.g. \"5\") and minimum-maximum range (e.g. \"3-5\") are supported.",
 					element, ex);
 		}
 		if (range != null) {
@@ -138,8 +138,8 @@ public class ExecutorBeanDefinitionParser extends AbstractSingleBeanDefinitionPa
 	}
 
 	private boolean shouldUseBackport(Element element) {
-		String size = element.getAttribute("size");
-		return StringUtils.hasText(size) && size.startsWith("0")
+		String poolSize = element.getAttribute("pool-size");
+		return StringUtils.hasText(poolSize) && poolSize.startsWith("0")
 				&& JdkVersion.getMajorJavaVersion() < JdkVersion.JAVA_16;
 	}
 
diff --git a/org.springframework.context/src/main/java/org/springframework/scheduling/config/SchedulerBeanDefinitionParser.java b/org.springframework.context/src/main/java/org/springframework/scheduling/config/SchedulerBeanDefinitionParser.java
index 274b84b631a..dba85fca505 100644
--- a/org.springframework.context/src/main/java/org/springframework/scheduling/config/SchedulerBeanDefinitionParser.java
+++ b/org.springframework.context/src/main/java/org/springframework/scheduling/config/SchedulerBeanDefinitionParser.java
@@ -37,9 +37,9 @@ public class SchedulerBeanDefinitionParser extends AbstractSingleBeanDefinitionP
 
 	@Override
 	protected void doParse(Element element, BeanDefinitionBuilder builder) {
-		String size = element.getAttribute("size");
-		if (StringUtils.hasText(size)) {
-			builder.addPropertyValue("poolSize", size);
+		String poolSize = element.getAttribute("pool-size");
+		if (StringUtils.hasText(poolSize)) {
+			builder.addPropertyValue("poolSize", poolSize);
 		}
 	}
 
diff --git a/org.springframework.context/src/main/resources/org/springframework/scheduling/config/spring-task-3.0.xsd b/org.springframework.context/src/main/resources/org/springframework/scheduling/config/spring-task-3.0.xsd
index 84deb60b21b..b87680766a3 100644
--- a/org.springframework.context/src/main/resources/org/springframework/scheduling/config/spring-task-3.0.xsd
+++ b/org.springframework.context/src/main/resources/org/springframework/scheduling/config/spring-task-3.0.xsd
@@ -62,7 +62,7 @@
 					]]></xsd:documentation>
 				</xsd:annotation>
 			</xsd:attribute>
-			<xsd:attribute name="size" type="xsd:string" use="optional">
+			<xsd:attribute name="pool-size" type="xsd:string" use="optional">
 				<xsd:annotation>
 					<xsd:documentation><![CDATA[
 	The size of the ScheduledExecutorService's thread pool. The default is 1.
@@ -88,7 +88,7 @@
 					]]></xsd:documentation>
 				</xsd:annotation>
 			</xsd:attribute>
-			<xsd:attribute name="size" type="xsd:string" use="optional">
+			<xsd:attribute name="pool-size" type="xsd:string" use="optional">
 				<xsd:annotation>
 					<xsd:documentation><![CDATA[
 	The size of the executor's thread pool as either a single value or a range
diff --git a/org.springframework.context/src/test/resources/org/springframework/scheduling/config/executorContext.xml b/org.springframework.context/src/test/resources/org/springframework/scheduling/config/executorContext.xml
index f7b1edbd70b..49f5e47c9c2 100644
--- a/org.springframework.context/src/test/resources/org/springframework/scheduling/config/executorContext.xml
+++ b/org.springframework.context/src/test/resources/org/springframework/scheduling/config/executorContext.xml
@@ -9,10 +9,10 @@
 
 	<task:executor id="default"/>
 
-	<task:executor id="singleSize" size="42"/>
+	<task:executor id="singleSize" pool-size="42"/>
 
-	<task:executor id="rangeWithBoundedQueue" size="7-42" queue-capacity="11"/>
+	<task:executor id="rangeWithBoundedQueue" pool-size="7-42" queue-capacity="11"/>
 
-	<task:executor id="rangeWithUnboundedQueue" size="0-9" keep-alive="37"/>
+	<task:executor id="rangeWithUnboundedQueue" pool-size="0-9" keep-alive="37"/>
 
 </beans>
diff --git a/org.springframework.context/src/test/resources/org/springframework/scheduling/config/schedulerContext.xml b/org.springframework.context/src/test/resources/org/springframework/scheduling/config/schedulerContext.xml
index 21ee9525030..9d2f54fced4 100644
--- a/org.springframework.context/src/test/resources/org/springframework/scheduling/config/schedulerContext.xml
+++ b/org.springframework.context/src/test/resources/org/springframework/scheduling/config/schedulerContext.xml
@@ -9,6 +9,6 @@
 
 	<task:scheduler id="defaultScheduler"/>
 
-	<task:scheduler id="customScheduler" size="42"/>
+	<task:scheduler id="customScheduler" pool-size="42"/>
 
 </beans>