diff --git a/extensions/amazon-lambda-rest/deployment/src/main/java/io/quarkus/amazon/lambda/http/deployment/AmazonLambdaHttpProcessor.java b/extensions/amazon-lambda-rest/deployment/src/main/java/io/quarkus/amazon/lambda/http/deployment/AmazonLambdaHttpProcessor.java
index 98de0706785c0..22ee1169136ba 100644
--- a/extensions/amazon-lambda-rest/deployment/src/main/java/io/quarkus/amazon/lambda/http/deployment/AmazonLambdaHttpProcessor.java
+++ b/extensions/amazon-lambda-rest/deployment/src/main/java/io/quarkus/amazon/lambda/http/deployment/AmazonLambdaHttpProcessor.java
@@ -24,6 +24,7 @@
 import io.quarkus.amazon.lambda.http.model.MultiValuedTreeMap;
 import io.quarkus.arc.deployment.AdditionalBeanBuildItem;
 import io.quarkus.arc.deployment.UnremovableBeanBuildItem;
+import io.quarkus.deployment.IsNormal;
 import io.quarkus.deployment.annotations.BuildProducer;
 import io.quarkus.deployment.annotations.BuildStep;
 import io.quarkus.deployment.annotations.ExecutionTime;
@@ -92,7 +93,7 @@ public void registerReflectionClasses(BuildProducer<ReflectiveClassBuildItem> re
     /**
      * Lambda provides /tmp for temporary files. Set vertx cache dir
      */
-    @BuildStep
+    @BuildStep(onlyIf = IsNormal.class)
     void setTempDir(BuildProducer<SystemPropertyBuildItem> systemProperty) {
         systemProperty.produce(new SystemPropertyBuildItem(CACHE_DIR_BASE_PROP_NAME, "/tmp/quarkus"));
     }