diff --git a/winsup/cygwin/autoload.cc b/winsup/cygwin/autoload.cc
index ef0465d4e..cdf6e75de 100644
--- a/winsup/cygwin/autoload.cc
+++ b/winsup/cygwin/autoload.cc
@@ -382,10 +382,10 @@ wsock_init (struct func_info *func)
 
   if (!wsock_started)
     {
-      int __stdcall (*wsastartup) (int, WSADATA *);
+      int (*wsastartup) (int, WSADATA *);
 
       /* Don't use autoload to load WSAStartup to eliminate recursion. */
-      wsastartup = (int __stdcall (*)(int, WSADATA *))
+      wsastartup = (int (*)(int, WSADATA *))
 		   GetProcAddress ((HMODULE) (dll->handle), "WSAStartup");
       if (wsastartup)
 	{
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index 9162f84e7..263bcc1a4 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -1006,7 +1006,7 @@ __cygwin_exit_return:			\n\
 ");
 }
 
-extern "C" void __stdcall
+extern "C" void
 _dll_crt0 ()
 {
   /* Starting with Windows 10 rel 1511, the main stack of an application is
diff --git a/winsup/cygwin/lib/cygwin_crt0.c b/winsup/cygwin/lib/cygwin_crt0.c
index 776e7e8de..7020a639d 100644
--- a/winsup/cygwin/lib/cygwin_crt0.c
+++ b/winsup/cygwin/lib/cygwin_crt0.c
@@ -9,7 +9,7 @@ details. */
 #undef __INSIDE_CYGWIN__
 #include "crt0.h"
 
-extern void __stdcall _dll_crt0 ()
+extern void _dll_crt0 ()
   __declspec (dllimport) __attribute__ ((noreturn));
 
 /* for main module */
diff --git a/winsup/cygwin/winsup.h b/winsup/cygwin/winsup.h
index 4bcbfde64..43dfbf46f 100644
--- a/winsup/cygwin/winsup.h
+++ b/winsup/cygwin/winsup.h
@@ -147,7 +147,7 @@ extern int cygserver_running;
 class per_process;
 /* cygwin .dll initialization */
 void dll_crt0 (per_process *) __asm__ (_SYMSTR (dll_crt0__FP11per_process));
-extern "C" void __stdcall _dll_crt0 ();
+extern "C" void _dll_crt0 ();
 void dll_crt0_1 (void *);
 void dll_dllcrt0_1 (void *);