diff --git a/build.gradle b/build.gradle
index cdbb7ab..cad03fd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -117,7 +117,7 @@ model {
                 cpp {
                     source {
                         srcDirs = ['src/driver/native/cpp', 'libsweep/src']
-                        include '**/*.cc'
+                        include '**/*.cc', '**/*.cpp'
                         excludes =  ['dummy.cc']
                     }
                     exportedHeaders {
diff --git a/src/driver/native/cpp/jni/SweepJNI.cpp b/src/driver/native/cpp/jni/SweepJNI.cpp
index ca4a2bf..46aefe8 100644
--- a/src/driver/native/cpp/jni/SweepJNI.cpp
+++ b/src/driver/native/cpp/jni/SweepJNI.cpp
@@ -40,7 +40,7 @@ JNIEXPORT jlong JNICALL Java_com_armabot_SweepJNI_constructSimple
   (JNIEnv *env, jclass)
 {
   sweep_error_s error = nullptr;
-  sweep_device_s rv = sweep_device_construct_simple(&error);
+  sweep_device_s rv = sweep_device_construct_simple("/dev/ttyUSB0", &error);
   if (!CheckStatus(env, error)) return 0;
   return reinterpret_cast<jlong>(rv);
 }