diff --git a/csaf-validation/build.gradle.kts b/csaf-validation/build.gradle.kts
index 9a70e3a9..036c8c71 100644
--- a/csaf-validation/build.gradle.kts
+++ b/csaf-validation/build.gradle.kts
@@ -1,5 +1,10 @@
 plugins {
     id("buildlogic.kotlin-library-conventions")
+    application
+}
+
+application {
+    mainClass = "io.github.csaf.sbom.validation.MainKt"
 }
 
 mavenPublishing {
diff --git a/csaf-validation/src/main/kotlin/io/github/csaf/sbom/validation/tests/Tests.kt b/csaf-validation/src/main/kotlin/io/github/csaf/sbom/validation/tests/Tests.kt
index b3cedac6..a5d35380 100644
--- a/csaf-validation/src/main/kotlin/io/github/csaf/sbom/validation/tests/Tests.kt
+++ b/csaf-validation/src/main/kotlin/io/github/csaf/sbom/validation/tests/Tests.kt
@@ -27,6 +27,10 @@ object Test611MissingDefinitionOfProductID : Test {
         val definitions = doc.product_tree?.gatherProductIds() ?: setOf()
         val references = gatherProductReferences(doc)
 
+        println(
+            "Gathered ${definitions.size} product ID definitions and ${references.size} product ID references"
+        )
+
         val notDefined = references.subtract(definitions)
 
         return if (notDefined.isEmpty()) {
@@ -44,6 +48,10 @@ object Test621UnusedDefinitionOfProductID : Test {
         val definitions = doc.product_tree?.gatherProductIds() ?: setOf()
         val references = gatherProductReferences(doc)
 
+        println(
+            "Gathered ${definitions.size} product ID definitions and ${references.size} product ID references"
+        )
+
         val notUsed = definitions.subtract(references)
         return if (notUsed.isEmpty()) {
             ValidationSuccessful