diff --git a/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.java b/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.java
index 6ca4905fbc..38da550c57 100644
--- a/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.java
+++ b/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/autoconfigure/DevToolsDataSourceAutoConfiguration.java
@@ -110,7 +110,7 @@ public class DevToolsDataSourceAutoConfiguration {
 			return false;
 		}
 
-		private static enum InMemoryDatabase {
+		private enum InMemoryDatabase {
 
 			DERBY(null, "org.apache.derby.jdbc.EmbeddedDriver"),