diff --git a/core/deployment/src/main/java/io/quarkus/deployment/dev/testing/JunitTestRunner.java b/core/deployment/src/main/java/io/quarkus/deployment/dev/testing/JunitTestRunner.java
index a206ba7bd2a49..f35903b479401 100644
--- a/core/deployment/src/main/java/io/quarkus/deployment/dev/testing/JunitTestRunner.java
+++ b/core/deployment/src/main/java/io/quarkus/deployment/dev/testing/JunitTestRunner.java
@@ -784,11 +784,13 @@ private DiscoveryResult discoverTestClasses() {
         FacadeClassLoader facadeClassLoader = FacadeClassLoader.instance(parent); // TODO ideally it would be in a different module, but that is hard CollaboratingClassLoader.construct(parent);
 
         facadeClassLoader.setAuxiliaryApplication(true);
-        // TODO clumsy hack, consolidate logic properly
+        // TODO clumsy hack, consolidate logic properly; this path is nicer if we can do it, because it has the moduleinfo
         facadeClassLoader.setProfiles(profiles);
-        facadeClassLoader.setClassPath(moduleInfo.getTest()
-                .get()
-                .getClassesPath());
+        facadeClassLoader.setClassPath(moduleInfo.getMain()
+                .getClassesPath(),
+                moduleInfo.getTest()
+                        .get()
+                        .getClassesPath());
 
         // TODO this is annoyingly necessary because in dev mode getAnnotations() on the class returns an empty array
         facadeClassLoader.setQuarkusTestClasses(quarkusTestClasses);
diff --git a/core/deployment/src/main/java/io/quarkus/test/junit/classloading/FacadeClassLoader.java b/core/deployment/src/main/java/io/quarkus/test/junit/classloading/FacadeClassLoader.java
index a3366251cd154..76f103616533a 100644
--- a/core/deployment/src/main/java/io/quarkus/test/junit/classloading/FacadeClassLoader.java
+++ b/core/deployment/src/main/java/io/quarkus/test/junit/classloading/FacadeClassLoader.java
@@ -694,8 +694,9 @@ public void setProfiles(Map<String, String> profiles) {
         this.profiles = profiles;
     }
 
-    public void setClassPath(String classesPath) {
-        this.classesPath = classesPath;
+    public void setClassPath(String... classPaths) {
+
+        this.classesPath = String.join(File.pathSeparator, classPaths);
         System.out.println("HOLLY setting other classpath to " + classesPath);
         URL[] urls = Arrays.stream(classesPath.split(File.pathSeparator))
                 .map(spec -> {