diff --git a/dlls/kernel/kernel32.spec b/dlls/kernel/kernel32.spec
index 12d91504fc8..e6d133b22e5 100644
--- a/dlls/kernel/kernel32.spec
+++ b/dlls/kernel/kernel32.spec
@@ -253,8 +253,8 @@
 @ stdcall EnumSystemCodePagesA(ptr long)
 @ stdcall EnumSystemCodePagesW(ptr long)
 @ stub EnumSystemGeoID
-@ stub EnumSystemLanguageGroupsA
-@ stub EnumSystemLanguageGroupsW
+@ stdcall EnumSystemLanguageGroupsA(ptr long ptr)
+@ stdcall EnumSystemLanguageGroupsW(ptr long ptr)
 @ stdcall EnumSystemLocalesA(ptr long)
 @ stdcall EnumSystemLocalesW(ptr long)
 @ stdcall EnumTimeFormatsA(ptr long long)
diff --git a/dlls/kernel/locale.c b/dlls/kernel/locale.c
index e2a6b138101..9184a65d32a 100644
--- a/dlls/kernel/locale.c
+++ b/dlls/kernel/locale.c
@@ -1012,3 +1012,31 @@ void LOCALE_Init(void)
     CODEPAGE_Init( ansi, oem, mac, lcid );
     update_registry( lcid );
 }
+
+/******************************************************************************
+ *           EnumSystemLanguageGroupsA    (KERNEL32.@)
+ */
+BOOL EnumSystemLanguageGroupsA(
+  LANGUAGEGROUP_ENUMPROCA pLangGroupEnumProc, /* callback function */
+  DWORD dwFlags,                             /* language groups */
+  LONG_PTR  lParam                           /* callback parameter */
+)
+{
+  FIXME("stub\n");
+  SetLastError( ERROR_INVALID_PARAMETER );
+  return FALSE;
+}
+
+/******************************************************************************
+ *           EnumSystemLanguageGroupsW    (KERNEL32.@)
+ */
+BOOL EnumSystemLanguageGroupsW(
+  LANGUAGEGROUP_ENUMPROCW pLangGroupEnumProc, /* callback function */
+  DWORD dwFlags,                             /* language groups */
+  LONG_PTR  lParam                           /* callback parameter */
+)
+{
+  FIXME("stub\n");
+  SetLastError( ERROR_INVALID_PARAMETER );
+  return FALSE;
+}
diff --git a/include/winnls.h b/include/winnls.h
index db0c880984d..9409817af02 100644
--- a/include/winnls.h
+++ b/include/winnls.h
@@ -340,6 +340,7 @@ extern "C" {
 /* Types
  */
 
+typedef DWORD LGRPID;
 typedef DWORD LCTYPE;
 typedef DWORD CALTYPE;
 typedef DWORD CALID;
@@ -440,6 +441,8 @@ typedef BOOL    (CALLBACK *LOCALE_ENUMPROCA)(LPSTR);
 typedef BOOL    (CALLBACK *LOCALE_ENUMPROCW)(LPWSTR);
 typedef BOOL    (CALLBACK *TIMEFMT_ENUMPROCA)(LPSTR);
 typedef BOOL    (CALLBACK *TIMEFMT_ENUMPROCW)(LPWSTR);
+typedef BOOL    (CALLBACK *LANGUAGEGROUP_ENUMPROCA)(LGRPID, LPSTR, LPSTR, DWORD, LONG_PTR);
+typedef BOOL    (CALLBACK *LANGUAGEGROUP_ENUMPROCW)(LGRPID, LPWSTR, LPWSTR, DWORD, LONG_PTR);
 #else
 typedef FARPROC CALINFO_ENUMPROCA;
 typedef FARPROC CALINFO_ENUMPROCW;
@@ -455,6 +458,8 @@ typedef FARPROC LOCALE_ENUMPROCA;
 typedef FARPROC LOCALE_ENUMPROCW;
 typedef FARPROC TIMEFMT_ENUMPROCA;
 typedef FARPROC TIMEFMT_ENUMPROCW;
+typedef FARPROC LANGUAGEGROUP_ENUMPROCA;
+typedef FARPROC LANGUAGEGROUP_ENUMPROCW;
 #endif /* STRICT */
 
 DECL_WINELIB_TYPE_AW(CALINFO_ENUMPROC)