diff --git a/source/backend/engine/CarlaEngineJack.cpp b/source/backend/engine/CarlaEngineJack.cpp
index 2056589ab..11df98f1c 100644
--- a/source/backend/engine/CarlaEngineJack.cpp
+++ b/source/backend/engine/CarlaEngineJack.cpp
@@ -25,15 +25,20 @@
 #include "CarlaPatchbayUtils.hpp"
 #include "CarlaStringList.hpp"
 
-#include "jackbridge/JackBridge.hpp"
 #include "jackey.h"
-
 #include "juce_audio_basics.h"
 
 #ifdef __SSE2_MATH__
 # include <xmmintrin.h>
 #endif
 
+// must be last
+#include "jackbridge/JackBridge.hpp"
+
+#ifndef __cdecl
+# define __cdecl
+#endif
+
 #define URI_CANVAS_ICON "http://kxstudio.sf.net/ns/canvas/icon"
 
 using juce::FloatVectorOperations;
@@ -2052,7 +2057,7 @@ private:
 
     #define handlePtr ((CarlaEngineJack*)arg)
 
-    static void carla_jack_thread_init_callback(void*)
+    static void __cdecl carla_jack_thread_init_callback(void*)
     {
 #ifdef __SSE2_MATH__
         // Set FTZ and DAZ flags
@@ -2060,65 +2065,65 @@ private:
 #endif
     }
 
-    static int carla_jack_bufsize_callback(jack_nframes_t newBufferSize, void* arg)
+    static int __cdecl carla_jack_bufsize_callback(jack_nframes_t newBufferSize, void* arg)
     {
         handlePtr->handleJackBufferSizeCallback(newBufferSize);
         return 0;
     }
 
-    static int carla_jack_srate_callback(jack_nframes_t newSampleRate, void* arg)
+    static int __cdecl carla_jack_srate_callback(jack_nframes_t newSampleRate, void* arg)
     {
         handlePtr->handleJackSampleRateCallback(newSampleRate);
         return 0;
     }
 
-    static void carla_jack_freewheel_callback(int starting, void* arg)
+    static void __cdecl carla_jack_freewheel_callback(int starting, void* arg)
     {
         handlePtr->handleJackFreewheelCallback(bool(starting));
     }
 
-    static int carla_jack_process_callback(jack_nframes_t nframes, void* arg)
+    static int __cdecl carla_jack_process_callback(jack_nframes_t nframes, void* arg)
     {
         handlePtr->handleJackProcessCallback(nframes);
         return 0;
     }
 
-    static void carla_jack_latency_callback(jack_latency_callback_mode_t mode, void* arg)
+    static void __cdecl carla_jack_latency_callback(jack_latency_callback_mode_t mode, void* arg)
     {
         handlePtr->handleJackLatencyCallback(mode);
     }
 
 #ifndef BUILD_BRIDGE
-    static void carla_jack_client_registration_callback(const char* name, int reg, void* arg)
+    static void __cdecl carla_jack_client_registration_callback(const char* name, int reg, void* arg)
     {
         handlePtr->handleJackClientRegistrationCallback(name, (reg != 0));
     }
 
-    static void carla_jack_port_registration_callback(jack_port_id_t port, int reg, void* arg)
+    static void __cdecl carla_jack_port_registration_callback(jack_port_id_t port, int reg, void* arg)
     {
         handlePtr->handleJackPortRegistrationCallback(port, (reg != 0));
     }
 
-    static void carla_jack_port_connect_callback(jack_port_id_t a, jack_port_id_t b, int connect, void* arg)
+    static void __cdecl carla_jack_port_connect_callback(jack_port_id_t a, jack_port_id_t b, int connect, void* arg)
     {
         handlePtr->handleJackPortConnectCallback(a, b, (connect != 0));
     }
 
-    static int carla_jack_client_rename_callback(const char* oldName, const char* newName, void* arg)
+    static int __cdecl carla_jack_client_rename_callback(const char* oldName, const char* newName, void* arg)
     {
         handlePtr->handleJackClientRenameCallback(oldName, newName);
         return 0;
     }
 
     // NOTE: JACK1 returns void, JACK2 returns int
-    static int carla_jack_port_rename_callback(jack_port_id_t port, const char* oldName, const char* newName, void* arg)
+    static int __cdecl carla_jack_port_rename_callback(jack_port_id_t port, const char* oldName, const char* newName, void* arg)
     {
         handlePtr->handleJackPortRenameCallback(port, oldName, newName);
         return 0;
     }
 #endif
 
-    static void carla_jack_shutdown_callback(void* arg)
+    static void __cdecl carla_jack_shutdown_callback(void* arg)
     {
         handlePtr->handleJackShutdownCallback();
     }
@@ -2128,7 +2133,7 @@ private:
     // -------------------------------------------------------------------
 
 #ifndef BUILD_BRIDGE
-    static int carla_jack_process_callback_plugin(jack_nframes_t nframes, void* arg)
+    static int __cdecl carla_jack_process_callback_plugin(jack_nframes_t nframes, void* arg)
     {
         CarlaPlugin* const plugin((CarlaPlugin*)arg);
         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr && plugin->isEnabled(), 0);
@@ -2147,12 +2152,12 @@ private:
         return 0;
     }
 
-    static void carla_jack_latency_callback_plugin(jack_latency_callback_mode_t /*mode*/, void* /*arg*/)
+    static void __cdecl carla_jack_latency_callback_plugin(jack_latency_callback_mode_t /*mode*/, void* /*arg*/)
     {
         // TODO
     }
 
-    static void carla_jack_shutdown_callback_plugin(void* arg)
+    static void __cdecl carla_jack_shutdown_callback_plugin(void* arg)
     {
         CarlaPlugin* const plugin((CarlaPlugin*)arg);
         CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);
diff --git a/source/jackbridge/JackBridgeExport.hpp b/source/jackbridge/JackBridgeExport.hpp
index 8071eae6e..60d3e572d 100644
--- a/source/jackbridge/JackBridgeExport.hpp
+++ b/source/jackbridge/JackBridgeExport.hpp
@@ -18,6 +18,8 @@
 
 // -----------------------------------------------------------------------------
 
+extern "C" {
+
 typedef void        (__cdecl *jackbridgesym_get_version)(int* major_ptr, int* minor_ptr, int* micro_ptr, int* proto_ptr);
 typedef const char* (__cdecl *jackbridgesym_get_version_string)(void);
 typedef jack_client_t* (__cdecl *jackbridgesym_client_open)(const char* client_name, jack_options_t options, jack_status_t* status);
@@ -116,6 +118,8 @@ typedef void (__cdecl *jackbridgesym_shm_attach)(void* shm, const char* name);
 typedef void (__cdecl *jackbridgesym_shm_close)(void* shm);
 typedef void* (__cdecl *jackbridgesym_shm_map)(void* shm, size_t size);
 
+} // extern "C"
+
 // -----------------------------------------------------------------------------
 
 struct JackBridgeExportedFunctions {
@@ -222,6 +226,10 @@ struct JackBridgeExportedFunctions {
 
 // -----------------------------------------------------------------------------
 
-typedef const JackBridgeExportedFunctions* (*jackbridge_exported_function_type)();
+extern "C" {
+
+typedef const JackBridgeExportedFunctions* (__cdecl *jackbridge_exported_function_type)();
+
+} // extern "C"
 
 // -----------------------------------------------------------------------------