diff --git a/src/voglcommon/gl_types.h b/src/voglcommon/gl_types.h
index fbfb3685..f168c25c 100644
--- a/src/voglcommon/gl_types.h
+++ b/src/voglcommon/gl_types.h
@@ -80,7 +80,14 @@ struct _cl_event;
 
 typedef GLintptr GLvdpauSurfaceNV;
 
+#ifndef GLAPIENTRY
+#if (VOGL_PLATFORM_HAS_WGL)
+#define GLAPIENTRY __stdcall
+#else
 #define GLAPIENTRY
+#endif
+#endif
+
 typedef void(GLAPIENTRY *GLDEBUGPROC)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *userParam);
 typedef void(GLAPIENTRY *GLDEBUGPROCARB)(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *userParam);
 typedef void(GLAPIENTRY *GLDEBUGPROCAMD)(GLuint id, GLenum category, GLenum severity, GLsizei length, const GLchar *message, GLvoid *userParam);
diff --git a/src/voglcommon/vogl_entrypoints.cpp b/src/voglcommon/vogl_entrypoints.cpp
index efc68b9b..b5b8b415 100644
--- a/src/voglcommon/vogl_entrypoints.cpp
+++ b/src/voglcommon/vogl_entrypoints.cpp
@@ -49,7 +49,7 @@ static void *g_gl_func_epilog_func_user_data;
 // a user provided prolog/epilog funcs. This is where the *actual* GL/GLX driver funcs are called.
 //----------------------------------------------------------------------------------------------------------------------
 #define DEF_PROTO(exported, category, ret, ret_type, num_params, func_name, args, params)                         \
-    static ret VOGL_GLUER(vogl_direct_wrapper_, func_name) args                                                  \
+    static ret GLAPIENTRY VOGL_GLUER(vogl_direct_wrapper_, func_name) args                                        \
     {                                                                                                             \
         void *pStack_data = NULL;                                                                                 \
         if (g_gl_func_prolog_func_ptr)                                                                            \
@@ -61,7 +61,7 @@ static void *g_gl_func_epilog_func_user_data;
     }
 
 #define DEF_PROTO_VOID(exported, category, ret, ret_type, num_params, func_name, args, params)                    \
-    static void VOGL_GLUER(vogl_direct_wrapper_, func_name) args                                                 \
+    static void GLAPIENTRY VOGL_GLUER(vogl_direct_wrapper_, func_name) args                                       \
     {                                                                                                             \
         void *pStack_data = NULL;                                                                                 \
         if (g_gl_func_prolog_func_ptr)                                                                            \
diff --git a/src/voglcommon/vogl_entrypoints.h b/src/voglcommon/vogl_entrypoints.h
index 91f6a683..0799a6fc 100644
--- a/src/voglcommon/vogl_entrypoints.h
+++ b/src/voglcommon/vogl_entrypoints.h
@@ -33,8 +33,8 @@
 // define GL/GLX function pointer typedefs, i.e. glXGetProcAddress_func_ptr_t
 //----------------------------------------------------------------------------------------------------------------------
 
-#define DEF_PROTO(exported, category, ret, ret_type, num_params, name, args, params) typedef ret(*name##_func_ptr_t) args;
-#define DEF_PROTO_VOID(exported, category, ret, ret_type, num_params, name, args, params) typedef ret(*name##_func_ptr_t) args;
+#define DEF_PROTO(exported, category, ret, ret_type, num_params, name, args, params) typedef ret(GLAPIENTRY *name##_func_ptr_t) args;
+#define DEF_PROTO_VOID(exported, category, ret, ret_type, num_params, name, args, params) typedef ret(GLAPIENTRY *name##_func_ptr_t) args;
 #include "gl_glx_wgl_protos.inc"
 #undef DEF_PROTO
 #undef DEF_PROTO_VOID
diff --git a/src/voglcommon/vogl_gl_replayer.h b/src/voglcommon/vogl_gl_replayer.h
index a7c14e0b..d0cd7c33 100644
--- a/src/voglcommon/vogl_gl_replayer.h
+++ b/src/voglcommon/vogl_gl_replayer.h
@@ -1303,8 +1303,8 @@ class vogl_gl_replayer
     status_t switch_contexts(vogl_trace_context_ptr_value trace_context);
 
     // Loosely derived from http://www.altdevblogaday.com/2011/06/23/improving-opengl-error-messages/
-    static void debug_callback_arb(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param);
-    static void debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param);
+    static void GLAPIENTRY debug_callback_arb(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param);
+    static void GLAPIENTRY debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param);
 
     bool is_extension_supported(const char *pExt);
 
diff --git a/src/voglcommon/vogl_gl_utils.cpp b/src/voglcommon/vogl_gl_utils.cpp
index fbb9c7d1..266bfd87 100644
--- a/src/voglcommon/vogl_gl_utils.cpp
+++ b/src/voglcommon/vogl_gl_utils.cpp
@@ -1954,7 +1954,7 @@ void vogl_format_debug_output_arb(char out_str[], size_t out_str_size, GLenum so
 //----------------------------------------------------------------------------------------------------------------------
 // vogl_generic_arb_debug_callback
 //----------------------------------------------------------------------------------------------------------------------
-void vogl_generic_arb_debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param)
+void GLAPIENTRY vogl_generic_arb_debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param)
 {
     VOGL_FUNC_TRACER
 
diff --git a/src/voglcommon/vogl_gl_utils.h b/src/voglcommon/vogl_gl_utils.h
index f8679947..bbd86b34 100644
--- a/src/voglcommon/vogl_gl_utils.h
+++ b/src/voglcommon/vogl_gl_utils.h
@@ -870,7 +870,7 @@ inline bool vogl_json_deserialize_vec4F(const json_node &src_node, vec4F &vec)
 // vogl_format_debug_output_arb
 //----------------------------------------------------------------------------------------------------------------------
 void vogl_format_debug_output_arb(char out_str[], size_t out_str_size, GLenum source, GLenum type, GLuint id, GLenum severity, const char *msg);
-void vogl_generic_arb_debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param);
+void GLAPIENTRY vogl_generic_arb_debug_callback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param);
 void vogl_enable_generic_context_debug_messages();
 
 //----------------------------------------------------------------------------------------------------------------------
diff --git a/src/vogltrace/vogl_intercept.cpp b/src/vogltrace/vogl_intercept.cpp
index bfcf8c61..e50ece2a 100644
--- a/src/vogltrace/vogl_intercept.cpp
+++ b/src/vogltrace/vogl_intercept.cpp
@@ -2725,7 +2725,7 @@ class vogl_context
     int m_current_display_list_handle;
     GLenum m_current_display_list_mode;
 
-    static void debug_callback_arb(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param)
+    static void GLAPIENTRY debug_callback_arb(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *message, GLvoid *pUser_param)
     {
         (void)length;
 
@@ -4198,7 +4198,7 @@ static inline void vogl_write_packet_to_trace(vogl_trace_packet &packet)
 // gl/glx override functions
 //----------------------------------------------------------------------------------------------------------------------
 template <typename GLFuncType, typename ProcNameType>
-static GLFuncType vogl_get_proc_address_helper_return_wrapper(GLFuncType (*realGetProcAddressFunc)(ProcNameType), ProcNameType procName)
+static GLFuncType vogl_get_proc_address_helper_return_wrapper(GLFuncType (GLAPIENTRY *realGetProcAddressFunc)(ProcNameType), ProcNameType procName)
 {
     if (!procName)
         return NULL;