diff --git a/tests/pom.xml b/tests/pom.xml
index b9a7c22ed..e1030c042 100644
--- a/tests/pom.xml
+++ b/tests/pom.xml
@@ -89,6 +89,8 @@
           <systemProperties>
             <teavm.junit.target>${project.build.directory}/js-tests</teavm.junit.target>
             <teavm.junit.js.runner>htmlunit</teavm.junit.js.runner>
+            <teavm.junit.minified>true</teavm.junit.minified>
+            <teavm.junit.optimized>true</teavm.junit.optimized>
           </systemProperties>
           <argLine>-Xmx512m</argLine>
         </configuration>