diff --git a/src/drivers/Pico/Fl_Pico_Image_Surface.H b/src/drivers/Pico/Fl_Pico_Image_Surface.H
deleted file mode 100644
index e69de29bb..000000000
diff --git a/src/drivers/PicoAndroid/Fl_PicoAndroid_Image_Surface.H b/src/drivers/PicoAndroid/Fl_PicoAndroid_Image_Surface.H
deleted file mode 100644
index 05202afdd..000000000
--- a/src/drivers/PicoAndroid/Fl_PicoAndroid_Image_Surface.H
+++ /dev/null
@@ -1,15 +0,0 @@
-class Fl_Image_Surface::Helper : public Fl_Widget_Surface { // class model
-  friend class Fl_Image_Surface;
-public:
-  Fl_Offscreen offscreen;
-  int width;
-  int height;
-  Helper(int w, int h, int high_res) : Fl_Widget_Surface(NULL), width(w), height(h) {} // to implement
-  ~Helper() {} // to implement
-  void set_current(){} // to implement
-  void translate(int x, int y) {} // to implement
-  void untranslate() {} // to implement
-  Fl_RGB_Image *image() {} // to implement
-  void end_current() {} // to implement
-  int printable_rect(int *w, int *h) {*w = width; *h = height; return 0;}
-};
diff --git a/src/drivers/PicoSDL/Fl_PicoSDL_Image_Surface.H b/src/drivers/PicoSDL/Fl_PicoSDL_Image_Surface.H
deleted file mode 100644
index 05202afdd..000000000
--- a/src/drivers/PicoSDL/Fl_PicoSDL_Image_Surface.H
+++ /dev/null
@@ -1,15 +0,0 @@
-class Fl_Image_Surface::Helper : public Fl_Widget_Surface { // class model
-  friend class Fl_Image_Surface;
-public:
-  Fl_Offscreen offscreen;
-  int width;
-  int height;
-  Helper(int w, int h, int high_res) : Fl_Widget_Surface(NULL), width(w), height(h) {} // to implement
-  ~Helper() {} // to implement
-  void set_current(){} // to implement
-  void translate(int x, int y) {} // to implement
-  void untranslate() {} // to implement
-  Fl_RGB_Image *image() {} // to implement
-  void end_current() {} // to implement
-  int printable_rect(int *w, int *h) {*w = width; *h = height; return 0;}
-};