diff --git a/spring-ws-core/src/main/java/org/springframework/ws/soap/server/endpoint/SoapFaultMappingExceptionResolver.java b/spring-ws-core/src/main/java/org/springframework/ws/soap/server/endpoint/SoapFaultMappingExceptionResolver.java
index 7f15c4a0d..bbeef5af1 100644
--- a/spring-ws-core/src/main/java/org/springframework/ws/soap/server/endpoint/SoapFaultMappingExceptionResolver.java
+++ b/spring-ws-core/src/main/java/org/springframework/ws/soap/server/endpoint/SoapFaultMappingExceptionResolver.java
@@ -86,7 +86,7 @@ protected int getDepth(String exceptionMapping, Exception ex) {
 
 	@SuppressWarnings("unchecked")
 	private int getDepth(String exceptionMapping, Class<? extends Exception> exceptionClass, int depth) {
-		if (exceptionClass.getName().indexOf(exceptionMapping) != -1) {
+		if (exceptionClass.getName().contains(exceptionMapping)) {
 			return depth;
 		}
 		if (exceptionClass.equals(Throwable.class)) {