diff --git a/dlls/msvcrt/msvcrt.spec b/dlls/msvcrt/msvcrt.spec
index 4948745ad65..69b4c107548 100644
--- a/dlls/msvcrt/msvcrt.spec
+++ b/dlls/msvcrt/msvcrt.spec
@@ -400,11 +400,11 @@
 @ stub _outp #(long long)
 @ stub _outpd #(long long)
 @ stub _outpw #(long long)
-@ stub _pclose #(ptr)
+@ cdecl _pclose (ptr)
 @ extern _pctype MSVCRT__pctype
 @ extern _pgmptr MSVCRT__pgmptr
 @ stub _pipe #(ptr long long)
-@ stub _popen #(str str)
+@ cdecl _popen (str str)
 @ cdecl _purecall()
 @ cdecl _putch(long)
 @ cdecl _putenv(str)
@@ -534,7 +534,7 @@
 @ varargs _wopen(wstr long)
 @ stub _wperror #(wstr)
 @ extern _wpgmptr MSVCRT__wpgmptr
-@ stub _wpopen #(wstr wstr)
+@ cdecl _wpopen (wstr wstr)
 @ cdecl _wputenv(wstr)
 @ cdecl _wremove(wstr)
 @ cdecl _wrename(wstr wstr)
diff --git a/dlls/msvcrt/process.c b/dlls/msvcrt/process.c
index 0ed72a52ac9..e592b9ecf73 100644
--- a/dlls/msvcrt/process.c
+++ b/dlls/msvcrt/process.c
@@ -32,6 +32,7 @@
 #include "msvcrt.h"
 #include "msvcrt/errno.h"
 
+#include "msvcrt/stdio.h"
 #include "msvcrt/process.h"
 #include "msvcrt/stdlib.h"
 #include "msvcrt/string.h"
@@ -434,6 +435,33 @@ int _spawnvp(int flags, const char* name, const char* const* argv)
   return _spawnvpe(flags, name, argv, NULL);
 }
 
+/*********************************************************************
+ *		_popen (MSVCRT.@)
+ */
+MSVCRT_FILE* _popen(const char* command, const char* mode)
+{
+  FIXME("(command=%s, mode=%s): stub\n", debugstr_a(command), debugstr_a(mode));
+  return NULL;
+}
+
+/*********************************************************************
+ *		_wpopen (MSVCRT.@)
+ */
+MSVCRT_FILE* _wpopen(const MSVCRT_wchar_t* command, const MSVCRT_wchar_t* mode)
+{
+  FIXME("(command=%s, mode=%s): stub\n", debugstr_w(command), debugstr_w(mode));
+  return NULL;
+}
+
+/*********************************************************************
+ *		_pclose (MSVCRT.@)
+ */
+int _pclose(MSVCRT_FILE* file)
+{
+  FIXME("(file=%p): stub\n", file);
+  return 0;
+}
+
 /*********************************************************************
  *		system (MSVCRT.@)
  */
diff --git a/dlls/msvcrtd/msvcrtd.spec b/dlls/msvcrtd/msvcrtd.spec
index 9b30f648156..124ad1b9d74 100644
--- a/dlls/msvcrtd/msvcrtd.spec
+++ b/dlls/msvcrtd/msvcrtd.spec
@@ -429,11 +429,11 @@
 @ stub _outp #(long long)
 @ stub _outpd #(long long)
 @ stub _outpw #(long long)
-@ stub _pclose #(ptr)
+@ cdecl _pclose(ptr) msvcrt._pclose
 @ extern _pctype msvcrt._pctype
 @ extern _pgmptr msvcrt._pgmptr
 @ stub _pipe #(ptr long long)
-@ stub _popen #(str str)
+@ cdecl _popen(str str) msvcrt._popen
 @ cdecl _purecall() msvcrt._purecall
 @ cdecl _putch(long) msvcrt._putch
 @ cdecl _putenv(str) msvcrt._putenv
@@ -564,7 +564,7 @@
 @ varargs _wopen(wstr long) msvcrt._wopen
 @ stub _wperror #(wstr)
 @ stub _wpgmptr # extern
-@ stub _wpopen #(wstr wstr)
+@ cdecl _wpopen(wstr wstr) msvcrt._wpopen
 @ cdecl _wputenv(wstr) msvcrt._wputenv
 @ cdecl _wremove(wstr) msvcrt._wremove
 @ cdecl _wrename(wstr wstr) msvcrt._wrename