diff --git a/spring-boot/src/main/java/org/springframework/boot/bind/RelaxedNames.java b/spring-boot/src/main/java/org/springframework/boot/bind/RelaxedNames.java
index 157b760018..a20cdaa312 100644
--- a/spring-boot/src/main/java/org/springframework/boot/bind/RelaxedNames.java
+++ b/spring-boot/src/main/java/org/springframework/boot/bind/RelaxedNames.java
@@ -36,6 +36,9 @@ public final class RelaxedNames implements Iterable<String> {
 
 	private static final Pattern CAMEL_CASE_PATTERN = Pattern.compile("([^A-Z-])([A-Z])");
 
+	private static final Pattern SEPARATED_TO_CAMEL_CASE_PATTERN = Pattern
+			.compile("[_\\-.]");
+
 	private final String name;
 
 	private final Set<String> values = new LinkedHashSet<String>();
@@ -180,7 +183,7 @@ public final class RelaxedNames implements Iterable<String> {
 		private static String separatedToCamelCase(String value,
 				boolean caseInsensitive) {
 			StringBuilder builder = new StringBuilder();
-			for (String field : value.split("[_\\-.]")) {
+			for (String field : SEPARATED_TO_CAMEL_CASE_PATTERN.split(value)) {
 				field = (caseInsensitive ? field.toLowerCase() : field);
 				builder.append(
 						builder.length() == 0 ? field : StringUtils.capitalize(field));