diff --git a/spring-core/src/main/java/org/springframework/util/ClassUtils.java b/spring-core/src/main/java/org/springframework/util/ClassUtils.java
index 7fd0c70ddcef..a15835748a76 100644
--- a/spring-core/src/main/java/org/springframework/util/ClassUtils.java
+++ b/spring-core/src/main/java/org/springframework/util/ClassUtils.java
@@ -305,7 +305,8 @@ public static Class<?> forName(String name, @Nullable ClassLoader classLoader)
 		}
 		catch (ClassNotFoundException ex) {
 			int lastDotIndex = name.lastIndexOf(PACKAGE_SEPARATOR);
-			if (lastDotIndex != -1) {
+			int previousDotIndex = name.lastIndexOf(PACKAGE_SEPARATOR, lastDotIndex -1);
+			if (lastDotIndex != -1 && previousDotIndex != 1 && Character.isUpperCase(name.charAt(previousDotIndex + 1))) {
 				String nestedClassName =
 						name.substring(0, lastDotIndex) + NESTED_CLASS_SEPARATOR + name.substring(lastDotIndex + 1);
 				try {