diff --git a/src/dsc.h b/src/dsc.h
index cd72f81..b7c328a 100644
--- a/src/dsc.h
+++ b/src/dsc.h
@@ -7,7 +7,8 @@
 #ifndef __DSC_H
 #define __DSC_H
 
-#include <cstddef>
+#include <stddef.h>
+
 #include "solvespace.h"
 
 class Vector;
diff --git a/src/fltk/fltkmain.cpp b/src/fltk/fltkmain.cpp
index 6120c27..937dbc7 100644
--- a/src/fltk/fltkmain.cpp
+++ b/src/fltk/fltkmain.cpp
@@ -748,8 +748,8 @@ void ShowGraphicsEditControl(int x, int y, char *s)
 
     // Convert to ij (vs. xy) style coordinates,
     // and compensate for the input widget height due to inverse coord
-    x = x + GraphicsGlWnd->w()/2;
-    y = -y + GraphicsGlWnd->h()/2 - GraphicsEditControlWindow->h();
+    x = x + GraphicsGlWnd->w()/2 + GraphicsWnd->x();
+    y = -y + GraphicsGlWnd->h()/2 - GraphicsEditControlWindow->h() + GraphicsWnd->y();
 
     GraphicsEditControlWindow->position(x, y);
     GraphicsEditControl->value(s);