diff --git a/core/deployment/src/main/java/io/quarkus/deployment/index/IndexWrapper.java b/core/deployment/src/main/java/io/quarkus/deployment/index/IndexWrapper.java
index 904e38123913cd..a0d5ff80c8c6be 100644
--- a/core/deployment/src/main/java/io/quarkus/deployment/index/IndexWrapper.java
+++ b/core/deployment/src/main/java/io/quarkus/deployment/index/IndexWrapper.java
@@ -35,6 +35,16 @@ public class IndexWrapper implements IndexView {
 
     private static final Logger LOGGER = Logger.getLogger(CombinedIndexBuildStep.class);
 
+    private static final Set<String> PRIMITIVE_TYPES = Set.of(
+            "boolean",
+            "byte",
+            "short",
+            "int",
+            "long",
+            "float",
+            "double",
+            "char");
+
     private final IndexView index;
     private final ClassLoader deploymentClassLoader;
     final Map<DotName, Optional<ClassInfo>> additionalClasses;
@@ -300,6 +310,10 @@ private Optional<ClassInfo> computeAdditional(DotName className) {
 
     static boolean index(Indexer indexer, String className, ClassLoader classLoader) {
         boolean result = false;
+        if (PRIMITIVE_TYPES.contains(className) || className.startsWith("[")) {
+            // Ignore primitives and arrays
+            return false;
+        }
         try (InputStream stream = classLoader
                 .getResourceAsStream(className.replace('.', '/') + ".class")) {
             if (stream != null) {