diff --git a/core/src/main/java/jenkins/security/ClassFilterImpl.java b/core/src/main/java/jenkins/security/ClassFilterImpl.java
index <HASH>..<HASH> 100644
--- a/core/src/main/java/jenkins/security/ClassFilterImpl.java
+++ b/core/src/main/java/jenkins/security/ClassFilterImpl.java
@@ -209,7 +209,7 @@ public class ClassFilterImpl extends ClassFilter {
                     LOGGER.log(Level.WARNING, "problem checking " + loc, x);
                 }
             }
-            if (Main.isUnitTest) {
+            if (Main.isUnitTest || Main.isDevelopmentMode) {
                 if (loc.endsWith("/target/classes/")) {
                     LOGGER.log(Level.FINE, "{0} seems to be current plugin classes, OK", loc);
                     return true;
war/work/plugins/*.jpl broke mvn -f war hudson-dev:run.