diff --git a/c++/carla-bridge/Makefile b/c++/carla-bridge/Makefile
index b8cae42..a91095e 100644
--- a/c++/carla-bridge/Makefile
+++ b/c++/carla-bridge/Makefile
@@ -56,6 +56,9 @@ LINK_UI_LV2_GTK3_FLAGS  = $(LINK_UI_FLAGS) $(shell pkg-config --libs gtk+-3.0)
 BUILD_UI_LV2_QT4_FLAGS  = $(BUILD_UI_LV2_FLAGS) -DBRIDGE_LV2_QT4 $(shell pkg-config --cflags QtGui)
 LINK_UI_LV2_QT4_FLAGS   = $(LINK_UI_FLAGS) $(shell pkg-config --libs QtGui)
 
+BUILD_UI_LV2_QT5_FLAGS  = $(BUILD_UI_LV2_FLAGS) -DBRIDGE_LV2_QT5 $(shell pkg-config --cflags QtWidgets)
+LINK_UI_LV2_QT5_FLAGS   = $(LINK_UI_FLAGS) $(shell pkg-config --libs QtWidgets)
+
 BUILD_UI_LV2_X11_FLAGS  = $(BUILD_UI_LV2_FLAGS) -DBRIDGE_LV2_X11 $(shell pkg-config --cflags QtGui)
 LINK_UI_LV2_X11_FLAGS   = $(LINK_UI_FLAGS) $(shell pkg-config --libs QtGui)
 
@@ -83,6 +86,7 @@ ui_lv2-gtk3:
 endif
 
 ui_lv2-qt4:  carla-bridge-lv2-qt4
+ui_lv2-qt5:  carla-bridge-lv2-qt5
 ui_lv2-x11:  carla-bridge-lv2-x11
 ui_vst-hwnd: carla-bridge-vst-hwnd.exe
 ui_vst-x11:  carla-bridge-vst-x11
@@ -146,7 +150,7 @@ carla_bridge_osc__lv2-gtk3.o: carla_bridge_osc.cpp
 # ui_lv2-qt4
 
 OBJS_UI_LV2_QT4 = \
-	carla_bridge_ui-lv2__lv2-qt4.o carla_bridge_toolkit-qt4__lv2-qt4.o carla_bridge_osc__lv2.o \
+	carla_bridge_ui-lv2__lv2-qt4.o carla_bridge_toolkit-qt__lv2-qt4.o carla_bridge_osc__lv2.o \
 	../carla-lilv/carla_lilv.a ../carla-rtmempool/carla_rtmempool.a
 
 carla-bridge-lv2-qt4: $(OBJS_UI_LV2_QT4)
@@ -155,17 +159,36 @@ carla-bridge-lv2-qt4: $(OBJS_UI_LV2_QT4)
 carla_bridge_ui-lv2__lv2-qt4.o: carla_bridge_ui-lv2.cpp
 	$(CXX) $< $(BUILD_UI_LV2_QT4_FLAGS) -c -o $@
 
-carla_bridge_toolkit-qt4__lv2-qt4.o: carla_bridge_toolkit-qt4.cpp
+carla_bridge_toolkit-qt__lv2-qt4.o: carla_bridge_toolkit-qt.cpp
 	$(CXX) $< $(BUILD_UI_LV2_QT4_FLAGS) -c -o $@
 
 carla_bridge_osc__lv2-qt4.o: carla_bridge_osc.cpp
 	$(CXX) $< $(BUILD_UI_LV2_QT4_FLAGS) -c -o $@
 
+# --------------------------------------------------------------
+# ui_lv2-qt5
+
+OBJS_UI_LV2_QT5 = \
+	carla_bridge_ui-lv2__lv2-qt5.o carla_bridge_toolkit-qt__lv2-qt5.o carla_bridge_osc__lv2.o \
+	../carla-lilv/carla_lilv.a ../carla-rtmempool/carla_rtmempool.a
+
+carla-bridge-lv2-qt5: $(OBJS_UI_LV2_QT5)
+	$(CXX) $^ $(LINK_UI_LV2_QT5_FLAGS) -o $@ && $(STRIP) $@
+
+carla_bridge_ui-lv2__lv2-qt5.o: carla_bridge_ui-lv2.cpp
+	$(CXX) $< $(BUILD_UI_LV2_QT5_FLAGS) -c -o $@
+
+carla_bridge_toolkit-qt__lv2-qt5.o: carla_bridge_toolkit-qt.cpp
+	$(CXX) $< $(BUILD_UI_LV2_QT5_FLAGS) -c -o $@
+
+carla_bridge_osc__lv2-qt5.o: carla_bridge_osc.cpp
+	$(CXX) $< $(BUILD_UI_LV2_QT5_FLAGS) -c -o $@
+
 # --------------------------------------------------------------
 # ui_lv2-x11
 
 OBJS_UI_LV2_X11 = \
-	carla_bridge_ui-lv2__lv2-x11.o carla_bridge_toolkit-qt4__lv2-x11.o carla_bridge_osc__lv2.o \
+	carla_bridge_ui-lv2__lv2-x11.o carla_bridge_toolkit-qt__lv2-x11.o carla_bridge_osc__lv2.o \
 	../carla-lilv/carla_lilv.a ../carla-rtmempool/carla_rtmempool.a
 
 carla-bridge-lv2-x11: $(OBJS_UI_LV2_X11)
@@ -174,7 +197,7 @@ carla-bridge-lv2-x11: $(OBJS_UI_LV2_X11)
 carla_bridge_ui-lv2__lv2-x11.o: carla_bridge_ui-lv2.cpp
 	$(CXX) $< $(BUILD_UI_LV2_X11_FLAGS) -c -o $@
 
-carla_bridge_toolkit-qt4__lv2-x11.o: carla_bridge_toolkit-qt4.cpp
+carla_bridge_toolkit-qt__lv2-x11.o: carla_bridge_toolkit-qt.cpp
 	$(CXX) $< $(BUILD_UI_LV2_X11_FLAGS) -c -o $@
 
 carla_bridge_osc__lv2-x11.o: carla_bridge_osc.cpp
@@ -184,7 +207,7 @@ carla_bridge_osc__lv2-x11.o: carla_bridge_osc.cpp
 # ui_vst-hwnd
 
 OBJS_UI_VST_HWND = \
-	carla_bridge_ui-vst__vst-hwnd.o carla_bridge_toolkit-qt4__vst-hwnd.o carla_bridge_osc__vst.o
+	carla_bridge_ui-vst__vst-hwnd.o carla_bridge_toolkit-qt__vst-hwnd.o carla_bridge_osc__vst.o
 
 carla-bridge-vst-hwnd.exe: $(OBJS_UI_VST_HWND)
 	$(CXX) $^ $(LINK_UI_VST_HWND_FLAGS) -o $@ && $(STRIP) $@
@@ -192,14 +215,14 @@ carla-bridge-vst-hwnd.exe: $(OBJS_UI_VST_HWND)
 carla_bridge_ui-vst__vst-hwnd.o: carla_bridge_ui-vst.cpp
 	$(CXX) $< $(BUILD_UI_VST_HWND_FLAGS) -c -o $@
 
-carla_bridge_toolkit-qt4__vst-hwnd.o: carla_bridge_toolkit-qt4.cpp
+carla_bridge_toolkit-qt__vst-hwnd.o: carla_bridge_toolkit-qt.cpp
 	$(CXX) $< $(BUILD_UI_VST_HWND_FLAGS) -c -o $@
 
 # --------------------------------------------------------------
 # ui_vst-x11
 
 OBJS_UI_VST_X11 = \
-	carla_bridge_ui-vst__vst-x11.o carla_bridge_toolkit-qt4__vst-x11.o carla_bridge_osc__vst.o
+	carla_bridge_ui-vst__vst-x11.o carla_bridge_toolkit-qt__vst-x11.o carla_bridge_osc__vst.o
 
 carla-bridge-vst-x11: $(OBJS_UI_VST_X11)
 	$(CXX) $^ $(LINK_UI_VST_X11_FLAGS) -o $@ && $(STRIP) $@
@@ -207,7 +230,7 @@ carla-bridge-vst-x11: $(OBJS_UI_VST_X11)
 carla_bridge_ui-vst__vst-x11.o: carla_bridge_ui-vst.cpp
 	$(CXX) $< $(BUILD_UI_VST_X11_FLAGS) -c -o $@
 
-carla_bridge_toolkit-qt4__vst-x11.o: carla_bridge_toolkit-qt4.cpp
+carla_bridge_toolkit-qt__vst-x11.o: carla_bridge_toolkit-qt.cpp
 	$(CXX) $< $(BUILD_UI_VST_X11_FLAGS) -c -o $@
 
 # --------------------------------------------------------------
diff --git a/c++/carla-bridge/carla_bridge_toolkit-qt4.cpp b/c++/carla-bridge/carla_bridge_toolkit-qt.cpp
similarity index 87%
rename from c++/carla-bridge/carla_bridge_toolkit-qt4.cpp
rename to c++/carla-bridge/carla_bridge_toolkit-qt.cpp
index f66aac2..32bb6e5 100644
--- a/c++/carla-bridge/carla_bridge_toolkit-qt4.cpp
+++ b/c++/carla-bridge/carla_bridge_toolkit-qt.cpp
@@ -19,11 +19,17 @@
 
 #include <QtCore/QSettings>
 #include <QtCore/QTimer>
-
 #include <QtCore/QTimerEvent>
-#include <QtGui/QApplication>
-#include <QtGui/QMainWindow>
-#include <QtGui/QVBoxLayout>
+
+#ifdef BRIDGE_LV2_QT5
+# include <QtWidgets/QApplication>
+# include <QtWidgets/QMainWindow>
+# include <QtWidgets/QVBoxLayout>
+#else
+# include <QtGui/QApplication>
+# include <QtGui/QMainWindow>
+# include <QtGui/QVBoxLayout>
+#endif
 
 #ifdef Q_WS_X11
 # include <QtGui/QX11EmbedContainer>
@@ -71,13 +77,15 @@ private:
 
 // -------------------------------------------------------------------------
 
-class CarlaToolkitQt4: public CarlaToolkit
+class CarlaToolkitQt: public CarlaToolkit
 {
 public:
-    CarlaToolkitQt4(const char* const title)
+    CarlaToolkitQt(const char* const title)
         : CarlaToolkit(title),
 #if defined(BRIDGE_LV2_QT4)
           settings("Cadence", "Carla-Qt4UIs")
+#elif defined(BRIDGE_LV2_QT5)
+          settings("Cadence", "Carla-Qt5UIs")
 #elif defined(BRIDGE_LV2_X11) || defined(BRIDGE_VST_X11)
           settings("Cadence", "Carla-X11UIs")
 #elif defined(BRIDGE_LV2_HWND) || defined(BRIDGE_VST_HWND)
@@ -86,7 +94,7 @@ public:
           settings("Cadence", "Carla-UIs")
 #endif
     {
-        qDebug("CarlaToolkitQt4::CarlaToolkitQt4(%s)", title);
+        qDebug("CarlaToolkitQt::CarlaToolkitQ4(%s)", title);
 
         app = nullptr;
         window = nullptr;
@@ -96,9 +104,9 @@ public:
 #endif
     }
 
-    ~CarlaToolkitQt4()
+    ~CarlaToolkitQt()
     {
-        qDebug("CarlaToolkitQt4::~CarlaToolkitQt4()");
+        qDebug("CarlaToolkitQt::~CarlaToolkitQt()");
         CARLA_ASSERT(! app);
 
         if (window)
@@ -110,7 +118,7 @@ public:
 
     void init()
     {
-        qDebug("CarlaToolkitQt4::init()");
+        qDebug("CarlaToolkitQt::init()");
         CARLA_ASSERT(! app);
         CARLA_ASSERT(! window);
 
@@ -123,7 +131,7 @@ public:
 
     void exec(CarlaClient* const client, const bool showGui)
     {
-        qDebug("CarlaToolkitQt4::exec(%p)", client);
+        qDebug("CarlaToolkitQt::exec(%p)", client);
         CARLA_ASSERT(app);
         CARLA_ASSERT(client);
 
@@ -167,7 +175,7 @@ public:
 
     void quit()
     {
-        qDebug("CarlaToolkitQt4::quit()");
+        qDebug("CarlaToolkitQt::quit()");
         CARLA_ASSERT(app);
 
         if (window)
@@ -201,7 +209,7 @@ public:
 
     void show()
     {
-        qDebug("CarlaToolkitQt4::show()");
+        qDebug("CarlaToolkitQt::show()");
         CARLA_ASSERT(window);
 
         if (window)
@@ -210,7 +218,7 @@ public:
 
     void hide()
     {
-        qDebug("CarlaToolkitQt4::hide()");
+        qDebug("CarlaToolkitQt::hide()");
         CARLA_ASSERT(window);
 
         if (window)
@@ -219,7 +227,7 @@ public:
 
     void resize(int width, int height)
     {
-        qDebug("CarlaToolkitQt4::resize(%i, %i)", width, height);
+        qDebug("CarlaToolkitQt::resize(%i, %i)", width, height);
         CARLA_ASSERT(window);
 
         if (window)
@@ -265,7 +273,7 @@ private:
 
 CarlaToolkit* CarlaToolkit::createNew(const char* const title)
 {
-    return new CarlaToolkitQt4(title);
+    return new CarlaToolkitQt(title);
 }
 
 CARLA_BRIDGE_END_NAMESPACE