diff --git a/gradle/ide.gradle b/gradle/ide.gradle
index 3580f4a28f2..b3d866d8342 100644
--- a/gradle/ide.gradle
+++ b/gradle/ide.gradle
@@ -90,7 +90,7 @@ idea {
           port = 5005
         }
         defaults(JUnit) {
-          vmParameters = '-Djava.locale.providers=SPI,COMPAT'
+          vmParameters = '-ea -Djava.locale.providers=SPI,COMPAT'
         }
       }
       copyright {