diff --git a/src/libCom/osi/os/WIN32/setThreadName.cpp b/src/libCom/osi/os/WIN32/setThreadName.cpp
index 3db1ca564..600950ce5 100644
--- a/src/libCom/osi/os/WIN32/setThreadName.cpp
+++ b/src/libCom/osi/os/WIN32/setThreadName.cpp
@@ -20,7 +20,7 @@
 
 
 static void setThreadNameVS ( DWORD dwThreadID, LPCSTR szThreadName );
-typedef HRESULT (*setDesc_t)(HANDLE, PCWSTR);
+typedef HRESULT (* WINAPI setDesc_t)(HANDLE, PCWSTR);
 
 extern "C" void setThreadName ( DWORD dwThreadID, LPCSTR szThreadName )
 {