diff --git a/src/bin/engine_gl_x11.c b/src/bin/engine_gl_x11.c
index b96272a..aa4cc33 100644
--- a/src/bin/engine_gl_x11.c
+++ b/src/bin/engine_gl_x11.c
@@ -67,7 +67,7 @@ engine_gl_x11_args(const char *engine, int width, int height)
         Atom state = XInternAtom(disp, "_NET_WM_STATE_FULLSCREEN", False);
         unsigned long data = state;
         XChangeProperty(disp, win, prop, XA_ATOM, 32, PropModeReplace, 
-                        &data, 1);
+                        (unsigned char*) &data, 1);
      }
    
    XStoreName(disp, win, "Expedite - Evas Test Suite");
diff --git a/src/bin/engine_software_16_x11.c b/src/bin/engine_software_16_x11.c
index a8bcdf5..df2fa14 100644
--- a/src/bin/engine_software_16_x11.c
+++ b/src/bin/engine_software_16_x11.c
@@ -63,7 +63,7 @@ engine_software_16_x11_args(const char *engine, int width, int height)
         Atom state = XInternAtom(disp, "_NET_WM_STATE_FULLSCREEN", False);
         unsigned long data = state;
         XChangeProperty(disp, win, prop, XA_ATOM, 32, PropModeReplace, 
-                        &data, 1);
+                        (unsigned char*) &data, 1);
      }
    
    XStoreName(disp, win, "Expedite - Evas Test Suite");
diff --git a/src/bin/engine_software_xlib.c b/src/bin/engine_software_xlib.c
index 332b12e..e002df6 100644
--- a/src/bin/engine_software_xlib.c
+++ b/src/bin/engine_software_xlib.c
@@ -80,7 +80,7 @@ engine_software_xlib_args(const char *engine, int width, int height)
         Atom state = XInternAtom(disp, "_NET_WM_STATE_FULLSCREEN", False);
         unsigned long data = state;
         XChangeProperty(disp, win, prop, XA_ATOM, 32, PropModeReplace, 
-                        &data, 1);
+                        (unsigned char*) &data, 1);
      }
 
    XStoreName(disp, win, "Expedite - Evas Test Suite");
diff --git a/src/bin/engine_xrender_x11.c b/src/bin/engine_xrender_x11.c
index 3354b16..7e3023a 100644
--- a/src/bin/engine_xrender_x11.c
+++ b/src/bin/engine_xrender_x11.c
@@ -65,7 +65,7 @@ engine_xrender_x11_args(const char *engine, int width, int height)
         Atom state = XInternAtom(disp, "_NET_WM_STATE_FULLSCREEN", False);
         unsigned long data = state;
         XChangeProperty(disp, win, prop, XA_ATOM, 32, PropModeReplace, 
-                        &data, 1);
+                        (unsigned char*) &data, 1);
      }
    
    XStoreName(disp, win, "Expedite - Evas Test Suite");