diff --git a/runtime/src/main/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapper.java b/runtime/src/main/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapper.java
index 45c4f076..a2a40c90 100644
--- a/runtime/src/main/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapper.java
+++ b/runtime/src/main/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapper.java
@@ -6,6 +6,7 @@
 import jakarta.ws.rs.Priorities;
 import jakarta.ws.rs.WebApplicationException;
 import jakarta.ws.rs.core.Response;
+import java.util.Optional;
 
 /**
  * Generic exception mapper for JaxRS WebApplicationExceptions - it passes status and message to application/problem response.
@@ -22,10 +23,10 @@ protected HttpProblem toProblem(WebApplicationException exception) {
                 .withStatus(status)
                 .withDetail(exception.getMessage());
 
-        exception
-                .getResponse()
-                .getHeaders()
-                .forEach((header, values) -> values.forEach(value -> problem.withHeader(header, value)));
+        Optional.ofNullable(exception.getResponse().getHeaders())
+                .ifPresent(headers -> {
+                    headers.forEach((header, values) -> values.forEach(value -> problem.withHeader(header, value)));
+                });
 
         return problem.build();
     }
diff --git a/runtime/src/test/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapperTest.java b/runtime/src/test/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapperTest.java
index 51757443..36195890 100644
--- a/runtime/src/test/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapperTest.java
+++ b/runtime/src/test/java/com/tietoevry/quarkus/resteasy/problem/jaxrs/WebApplicationExceptionMapperTest.java
@@ -3,6 +3,7 @@
 import static com.tietoevry.quarkus.resteasy.problem.HttpProblem.MEDIA_TYPE;
 import static jakarta.ws.rs.core.HttpHeaders.RETRY_AFTER;
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatCode;
 
 import com.tietoevry.quarkus.resteasy.problem.HttpProblem;
 import jakarta.ws.rs.RedirectionException;
@@ -10,6 +11,8 @@
 import jakarta.ws.rs.core.MediaType;
 import jakarta.ws.rs.core.Response;
 import java.net.URI;
+import org.jboss.resteasy.core.Headers;
+import org.jboss.resteasy.core.ServerResponse;
 import org.junit.jupiter.api.Test;
 
 class WebApplicationExceptionMapperTest {
@@ -65,4 +68,14 @@ void shouldMapRedirectionException() {
                 .isInstanceOf(HttpProblem.class)
                 .hasFieldOrPropertyWithValue("detail", "HTTP 301 Moved Permanently");
     }
+
+    @Test
+    void shouldHandleNullHeaders() {
+        Headers<Object> nullHeaders = null;
+        WebApplicationException exception = new WebApplicationException(
+                new ServerResponse(new Object(), 404, nullHeaders));
+
+        assertThatCode(() -> mapper.toResponse(exception))
+                .doesNotThrowAnyException();
+    }
 }