diff --git a/dlls/winecrt0/exe_entry.c b/dlls/winecrt0/exe_entry.c
index 60c11aa2629..69ebb1bdf3a 100644
--- a/dlls/winecrt0/exe_entry.c
+++ b/dlls/winecrt0/exe_entry.c
@@ -27,7 +27,7 @@
 #include "wine/library.h"
 #include "crt0_private.h"
 
-extern int main( int argc, char *argv[] );
+extern int __cdecl main( int argc, char *argv[] );
 
 DWORD WINAPI DECLSPEC_HIDDEN __wine_spec_exe_entry( PEB *peb )
 {
diff --git a/dlls/winecrt0/exe_main.c b/dlls/winecrt0/exe_main.c
index 94a96d1bb59..f51deba4a28 100644
--- a/dlls/winecrt0/exe_main.c
+++ b/dlls/winecrt0/exe_main.c
@@ -25,7 +25,7 @@
 #include "winbase.h"
 #include "winuser.h"
 
-int main( int argc, char *argv[] )
+int __cdecl main( int argc, char *argv[] )
 {
     STARTUPINFOA info;
     char *cmdline = GetCommandLineA();
diff --git a/dlls/winecrt0/exe_wentry.c b/dlls/winecrt0/exe_wentry.c
index ed1bd20b7e8..83606f264fd 100644
--- a/dlls/winecrt0/exe_wentry.c
+++ b/dlls/winecrt0/exe_wentry.c
@@ -27,7 +27,7 @@
 #include "wine/library.h"
 #include "crt0_private.h"
 
-extern int wmain( int argc, WCHAR *argv[] );
+extern int __cdecl wmain( int argc, WCHAR *argv[] );
 
 DWORD WINAPI DECLSPEC_HIDDEN __wine_spec_exe_wentry( PEB *peb )
 {
diff --git a/dlls/winecrt0/exe_wmain.c b/dlls/winecrt0/exe_wmain.c
index d697e90c629..f817462b432 100644
--- a/dlls/winecrt0/exe_wmain.c
+++ b/dlls/winecrt0/exe_wmain.c
@@ -27,7 +27,7 @@
 
 int WINAPI wWinMain(HINSTANCE,HINSTANCE,LPWSTR,int);
 
-int wmain( int argc, WCHAR *argv[] )
+int __cdecl wmain( int argc, WCHAR *argv[] )
 {
     STARTUPINFOW info;
     WCHAR *cmdline = GetCommandLineW();
diff --git a/programs/wineboot/wineboot.c b/programs/wineboot/wineboot.c
index ac43f149d52..defd12627d6 100644
--- a/programs/wineboot/wineboot.c
+++ b/programs/wineboot/wineboot.c
@@ -1255,7 +1255,7 @@ static const struct option long_options[] =
     { NULL,          0, 0, 0 }
 };
 
-int main( int argc, char *argv[] )
+int __cdecl main( int argc, char *argv[] )
 {
     static const WCHAR RunW[] = {'R','u','n',0};
     static const WCHAR RunOnceW[] = {'R','u','n','O','n','c','e',0};
diff --git a/programs/winebrowser/main.c b/programs/winebrowser/main.c
index 7fcaba13a1b..9cd6812d032 100644
--- a/programs/winebrowser/main.c
+++ b/programs/winebrowser/main.c
@@ -425,7 +425,7 @@ static WCHAR *convert_file_uri(IUri *uri)
  * Main entry point. This is a console application so we have a wmain() not a
  * winmain().
  */
-int wmain(int argc, WCHAR *argv[])
+int __cdecl wmain(int argc, WCHAR *argv[])
 {
     static const WCHAR nohomeW[] = {'-','n','o','h','o','m','e',0};
 
diff --git a/programs/winedbg/winedbg.c b/programs/winedbg/winedbg.c
index 8634c0f73fb..5aeaa0d4a21 100644
--- a/programs/winedbg/winedbg.c
+++ b/programs/winedbg/winedbg.c
@@ -662,7 +662,7 @@ static void restart_if_wow64(void)
     }
 }
 
-int main(int argc, char** argv)
+int __cdecl main(int argc, char** argv)
 {
     int 	        retv = 0;
     HANDLE              hFile = INVALID_HANDLE_VALUE;
diff --git a/programs/winepath/winepath.c b/programs/winepath/winepath.c
index ef11a5a1f89..36881d3f264 100644
--- a/programs/winepath/winepath.c
+++ b/programs/winepath/winepath.c
@@ -144,7 +144,7 @@ static int parse_options(WCHAR *argv[])
 /*
  * Main function
  */
-int wmain(int argc, WCHAR *argv[])
+int __cdecl wmain(int argc, WCHAR *argv[])
 {
     LPSTR (*CDECL wine_get_unix_file_name_ptr)(LPCWSTR) = NULL;
     LPWSTR (*CDECL wine_get_dos_file_name_ptr)(LPCSTR) = NULL;