diff --git a/OSC2AHK/dllmain.cpp b/OSC2AHK/dllmain.cpp
index 3e14314..275b896 100644
--- a/OSC2AHK/dllmain.cpp
+++ b/OSC2AHK/dllmain.cpp
@@ -160,7 +160,7 @@ bool isMatchingOscType(unsigned int msgType, unsigned int listenerTypeField)
     return (listenerTypeField & msgType);
 }
 
-DLLEXPORT int handleOscMsg(const osc::ReceivedMessage& m)
+int handleOscMsg(const osc::ReceivedMessage& m)
 {
     int ret = 0;
     unsigned int msgType = 0;
diff --git a/OSC2AHK/dllmain.h b/OSC2AHK/dllmain.h
index 32bc801..1e48512 100644
--- a/OSC2AHK/dllmain.h
+++ b/OSC2AHK/dllmain.h
@@ -23,7 +23,7 @@ extern "C" DLLEXPORT int open(HWND targetWindowHandle, unsigned int port);
 extern "C" DLLEXPORT int close(unsigned int clearListeners = 1);
 extern "C" DLLEXPORT int addListener(LPCSTR address, unsigned int messageID, unsigned int dataType = OSC_TYPE_ALL);
 extern "C" DLLEXPORT int removeListener(LPCSTR address);
-extern "C" DLLEXPORT int handleOscMsg(const osc::ReceivedMessage & m);
 extern "C" DLLEXPORT int testMsg(HWND windowHandle, unsigned int messageID);
+int handleOscMsg(const osc::ReceivedMessage& m);
 bool isMatchingOscType(unsigned int msgType, unsigned int listenerTypeField);
 unsigned int getOscType(osc::ReceivedMessage::const_iterator arg);