diff --git a/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java b/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
index 621db0ec37..3409bd47f9 100644
--- a/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
+++ b/spring-expression/src/main/java/org/springframework/expression/spel/support/ReflectivePropertyAccessor.java
@@ -282,13 +282,19 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
 	}
 
 	/**
-	 * Find a getter method for the specified property. A getter is defined as a method whose name start with the prefix
-	 * 'get' and the rest of the name is the same as the property name (with the first character uppercased).
+	 * Find a getter method for the specified property.
 	 */
 	protected Method findGetterForProperty(String propertyName, Class<?> clazz, boolean mustBeStatic) {
 		Method[] ms = clazz.getMethods();
+		String propertyWriteMethodSuffix;
+		if (propertyName.length() > 1 && Character.isUpperCase(propertyName.charAt(1))) {
+			propertyWriteMethodSuffix = propertyName;
+		}
+		else {
+			propertyWriteMethodSuffix = StringUtils.capitalize(propertyName);
+		}
 		// Try "get*" method...
-		String getterName = "get" + StringUtils.capitalize(propertyName);
+		String getterName = "get" + propertyWriteMethodSuffix;
 		for (Method method : ms) {
 			if (method.getName().equals(getterName) && method.getParameterTypes().length == 0 &&
 					(!mustBeStatic || Modifier.isStatic(method.getModifiers()))) {
@@ -296,7 +302,7 @@ public class ReflectivePropertyAccessor implements PropertyAccessor {
 			}
 		}
 		// Try "is*" method...
-		getterName = "is" + StringUtils.capitalize(propertyName);
+		getterName = "is" + propertyWriteMethodSuffix;
 		for (Method method : ms) {
 			if (method.getName().equals(getterName) && method.getParameterTypes().length == 0 &&
 					boolean.class.equals(method.getReturnType()) &&
diff --git a/spring-expression/src/test/java/org/springframework/expression/spel/support/ReflectionHelperTests.java b/spring-expression/src/test/java/org/springframework/expression/spel/support/ReflectionHelperTests.java
index 42cdc2b401..2bc87f90fb 100644
--- a/spring-expression/src/test/java/org/springframework/expression/spel/support/ReflectionHelperTests.java
+++ b/spring-expression/src/test/java/org/springframework/expression/spel/support/ReflectionHelperTests.java
@@ -318,7 +318,17 @@ public class ReflectionHelperTests extends ExpressionTestCase {
 //		Assert.assertEquals(0,rpr.read(ctx,t,"field3").getValue());
 		Assert.assertEquals(false,rpr.read(ctx,t,"property4").getValue());
 		Assert.assertTrue(rpr.canRead(ctx,t,"property4"));
-		
+
+		// repro SPR-9123, ReflectivePropertyAccessor JavaBean property names compliance tests
+		Assert.assertEquals("iD",rpr.read(ctx,t,"iD").getValue());
+		Assert.assertTrue(rpr.canRead(ctx,t,"iD"));
+		Assert.assertEquals("id",rpr.read(ctx,t,"id").getValue());
+		Assert.assertTrue(rpr.canRead(ctx,t,"id"));
+		Assert.assertEquals("ID",rpr.read(ctx,t,"ID").getValue());
+		Assert.assertTrue(rpr.canRead(ctx,t,"ID"));
+		// note: "Id" is not a valid JavaBean name, nevertheless it is treated as "id"
+		Assert.assertEquals("id",rpr.read(ctx,t,"Id").getValue());
+		Assert.assertTrue(rpr.canRead(ctx,t,"Id"));
 	}
 	
 	@Test
@@ -406,6 +416,9 @@ public class ReflectionHelperTests extends ExpressionTestCase {
 		String property2;
 		String property3 = "doodoo";
 		boolean property4 = false;
+		String iD = "iD";
+		String id = "id";
+		String ID = "ID";
 
 		public String getProperty() { return property; }
 		public void setProperty(String value) { property = value; }
@@ -415,6 +428,12 @@ public class ReflectionHelperTests extends ExpressionTestCase {
 		public String getProperty3() { return property3; }
 		
 		public boolean isProperty4() { return property4; }
+
+		public String getiD() { return iD; }
+
+		public String getId() { return id; }
+
+		public String getID() { return ID; }
 	}
 	
 	static class Super {