diff --git a/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/codegen/OpenApiGeneratorCodeGenBase.java b/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/codegen/OpenApiGeneratorCodeGenBase.java
index 733147b79..2982e5662 100644
--- a/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/codegen/OpenApiGeneratorCodeGenBase.java
+++ b/client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/codegen/OpenApiGeneratorCodeGenBase.java
@@ -295,8 +295,7 @@ private static OpenApiClientGeneratorWrapper createGeneratorWrapper(Path openApi
     }
 
     private String getBasePackage(final Config config, final Path openApiFilePath) {
-        return config
-                .getOptionalValue(getSpecConfigName(BASE_PACKAGE, openApiFilePath), String.class)
+        return getValues(config, openApiFilePath, BASE_PACKAGE, String.class)
                 .orElse(String.format("%s.%s", DEFAULT_PACKAGE, getSanitizedFileName(openApiFilePath)));
     }
 
diff --git a/client/integration-tests/config-key/src/main/resources/application.properties b/client/integration-tests/config-key/src/main/resources/application.properties
index da73f8891..de078f4ae 100644
--- a/client/integration-tests/config-key/src/main/resources/application.properties
+++ b/client/integration-tests/config-key/src/main/resources/application.properties
@@ -2,6 +2,7 @@
 quarkus.rest-client.custom_config_key.url=http://localhost:8080
 quarkus.openapi-generator.codegen.spec.config_key_openapi_yaml.config-key=custom_config_key
 quarkus.openapi-generator.codegen.spec.custom_config_key.mutiny=true
+quarkus.openapi-generator.codegen.spec.custom_config_key.base-package=com.oapi.pkg
 
 # use the @AnotherCustomAnnotation with `config_key_openapi_yaml`
 quarkus.openapi-generator.codegen.spec.config_key_openapi_yaml.additional-api-type-annotations=@io.quarkiverse.openapi.generator.configkey.AnotherCustomAnnotation
diff --git a/client/integration-tests/config-key/src/test/java/io/quarkiverse/openapi/generator/configkey/QuarkusConfigKeyOpenApiTest.java b/client/integration-tests/config-key/src/test/java/io/quarkiverse/openapi/generator/configkey/QuarkusConfigKeyOpenApiTest.java
index eb525d122..82f2999db 100644
--- a/client/integration-tests/config-key/src/test/java/io/quarkiverse/openapi/generator/configkey/QuarkusConfigKeyOpenApiTest.java
+++ b/client/integration-tests/config-key/src/test/java/io/quarkiverse/openapi/generator/configkey/QuarkusConfigKeyOpenApiTest.java
@@ -8,9 +8,10 @@
 import org.eclipse.microprofile.rest.client.inject.RestClient;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
-import org.openapi.quarkus.config_key_openapi_yaml.api.ReactiveGreetingResourceApi;
 import org.openapi.quarkus.empty_config_key_yaml.api.DefaultApi;
 
+import com.oapi.pkg.api.ReactiveGreetingResourceApi;
+
 import io.quarkus.test.junit.QuarkusTest;
 import io.smallrye.mutiny.Uni;
 
@@ -40,6 +41,7 @@ void config_key_apiIsBeingGenerated() throws NoSuchMethodException {
     @Test
     void config_key_customAnnotation() {
         assertThat(ReactiveGreetingResourceApi.class.getAnnotation(CustomAnnotation.class)).isNotNull();
+        assertThat(ReactiveGreetingResourceApi.class.getPackageName()).isEqualTo("com.oapi.pkg.api");
     }
 
     @Test