diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
index bd0f7fc4..f35b6e26 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/GenericRunner.kt
@@ -18,6 +18,8 @@ abstract class GenericTestRunner: ITestRunnerContributor {
     abstract fun args(project: Project, context: KobaltContext, classpath: List<IClasspathDependency>,
             testConfig: TestConfig) : List<String>
 
+    open fun filterTestClasses(classes: List<String>) : List<String> = classes
+
     override fun run(project: Project, context: KobaltContext, configName: String,
             classpath: List<IClasspathDependency>)
         = TaskResult(runTests(project, context, classpath, configName))
@@ -53,7 +55,7 @@ abstract class GenericTestRunner: ITestRunnerContributor {
 //            }
 
         context.logger.log(project.name, 2, "Found ${result.size} test classes")
-        return result.map { it.second }
+        return filterTestClasses(result.map { it.second })
     }
 
     /**
diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/KotlinTestRunner.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/KotlinTestRunner.kt
index 8be492d1..90c5d354 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/KotlinTestRunner.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/internal/KotlinTestRunner.kt
@@ -6,5 +6,11 @@ package com.beust.kobalt.internal
  */
 class KotlinTestRunner : JUnitRunner() {
     override val dependencyName = "io.kotlintest"
+
+    /**
+     * KotlinTestRunner runs tests in the init{} initializer, so ignore all the extra
+     * classes generated by the Kotlin compiler.
+     */
+    override fun filterTestClasses(classes: List<String>) = classes.filter { ! it.contains("$") }
 }