diff --git a/dlls/user/user.spec b/dlls/user/user.spec
index ed877beba7f..cab5a9dc1c0 100644
--- a/dlls/user/user.spec
+++ b/dlls/user/user.spec
@@ -87,7 +87,7 @@ file	user.exe
 83  pascal16 FrameRect(word ptr word) FrameRect16
 84  pascal16 DrawIcon(word s_word s_word word) DrawIcon16
 85  pascal16 DrawText(word str s_word ptr word) DrawText16
-86  stub BEAR86 # IconSize
+86  pascal   IconSize() IconSize16 # later versions: BEAR86
 87  pascal16 DialogBox(word segstr word segptr) DialogBox16
 88  pascal16 EndDialog(word s_word) EndDialog16
 89  pascal16 CreateDialog(word segstr word segptr) CreateDialog16
@@ -279,7 +279,7 @@ file	user.exe
 270 pascal16 GlobalFindAtom(str) GlobalFindAtomA
 271 pascal16 GlobalGetAtomName(word ptr s_word) GlobalGetAtomNameA
 272 pascal16 IsZoomed(word) IsZoomed16
-273 stub ControlPanelInfo
+273 pascal16 ControlPanelInfo(word word str) ControlPanelInfo16
 274 stub GetNextQueueWindow
 275 stub RepaintScreen
 276 stub LockMyTask
diff --git a/include/wine/winuser16.h b/include/wine/winuser16.h
index c1bb9991946..44ef6871fb0 100644
--- a/include/wine/winuser16.h
+++ b/include/wine/winuser16.h
@@ -640,6 +640,7 @@ VOID        WINAPI ClientToScreen16(HWND16,LPPOINT16);
 BOOL16      WINAPI ClipCursor16(const RECT16*);
 BOOL16      WINAPI CloseClipboard16(void);
 BOOL16      WINAPI CloseWindow16(HWND16);
+void        WINAPI ControlPanelInfo16(INT16, WORD, LPSTR);
 HCURSOR16   WINAPI CopyCursor16(HINSTANCE16,HCURSOR16);
 HICON16     WINAPI CopyIcon16(HINSTANCE16,HICON16);
 BOOL16      WINAPI CopyRect16(RECT16*,const RECT16*);
@@ -789,6 +790,7 @@ INT16       WINAPI GetWindowTextLength16(HWND16);
 WORD        WINAPI GetWindowWord16(HWND16,INT16);
 VOID        WINAPI HideCaret16(HWND16);
 BOOL16      WINAPI HiliteMenuItem16(HWND16,HMENU16,UINT16,UINT16);
+DWORD       WINAPI IconSize16(void);
 void        WINAPI InflateRect16(LPRECT16,INT16,INT16);
 BOOL16      WINAPI InSendMessage16(void);
 BOOL16      WINAPI InsertMenu16(HMENU16,UINT16,UINT16,UINT16,SEGPTR);
diff --git a/windows/cursoricon.c b/windows/cursoricon.c
index f0923ca7457..1e9d29d08e3 100644
--- a/windows/cursoricon.c
+++ b/windows/cursoricon.c
@@ -1346,6 +1346,17 @@ BOOL WINAPI DrawIcon( HDC hdc, INT x, INT y, HICON hIcon )
 }
 
 
+/***********************************************************************
+ *           IconSize16    (USER.86)
+ *
+ * See "Undocumented Windows". Used by W2.0 paint.exe.
+ */
+DWORD WINAPI IconSize16( void )
+{
+    return MAKELONG(GetSystemMetrics(SM_CYICON), GetSystemMetrics(SM_CXICON));
+}
+
+
 /***********************************************************************
  *           DumpIcon    (USER.459)
  */
diff --git a/windows/sysparams.c b/windows/sysparams.c
index dfa0b4ab983..0a3ff01cd4d 100644
--- a/windows/sysparams.c
+++ b/windows/sysparams.c
@@ -28,6 +28,14 @@ LONG WINAPI GetTimerResolution16(void)
 	return (1000);
 }
 
+/***********************************************************************
+ *	ControlPanelInfo16   (USER.273)
+ */
+void WINAPI ControlPanelInfo16( INT16 nInfoType, WORD wData, LPSTR lpBuffer)
+{
+	FIXME("(%d, %04x, %p): stub.\n", nInfoType, wData, lpBuffer);
+}
+
 /***********************************************************************
  *	SystemParametersInfoA   (USER32.540)
  */