--- client/images.cpp
+++ client/images.cpp
@@ -285,8 +285,8 @@
 	{
 	    fprintf(
 		stderr,
-"ImgOpenData(): Warning: Unable to open TGA image data: 0x%.8x\n",
-		(u_int32_t)data
+"ImgOpenData(): Warning: Unable to open TGA image data: %p\n",
+		data
 	    );
 	    ImgUnload(img_num);
 	    return(-1);
--- global/osw-x.cpp
+++ global/osw-x.cpp
@@ -8598,8 +8598,8 @@
 	/* Display */
 	fprintf(
 	    stderr,
-"        X server display connection pointer: 0x%.8x\n",
-	    (u_int32_t)error_event->display
+"        X server display connection pointer: %p\n",
+	    error_event->display
 	);
 
 	/* Serial number */
--- widgets/wfile.cpp
+++ widgets/wfile.cpp
@@ -213,7 +213,7 @@
 	status = TgaReadFromData(data, td, gui->depth);
 	if(status != TgaSuccess)
 	{
-	    fprintf(stderr, "WidgetLoadImageFromTgaData(): 0x%.8x: ", (u_int32_t)data);
+	    fprintf(stderr, "WidgetLoadImageFromTgaData(): %p: ", data);
 	    switch(status)
 	    {
 	      case TgaNoBuffers:
@@ -248,8 +248,8 @@
 	{
 	    fprintf(
 		stderr,
-"0x%.8x: Error: Unable to allocate GUI image.\n",
-		(u_int32_t)data
+"%p: Error: Unable to allocate GUI image.\n",
+		data
 	    );
 	}
 	else
@@ -517,8 +517,8 @@
 	{
 	    fprintf(
 		stderr,
-"0x%.8x: Unable to open XPM data.\n",
-		(u_int32_t)data
+"%p: Unable to open XPM data.\n",
+		data
 	    );
 	    return(None);
 	}
--- widgets/wglobal.cpp
+++ widgets/wglobal.cpp
@@ -602,8 +602,8 @@
 
 		sprintf(
 		    s,
-"WidgetDestroyGlobals(): Warning: %s widget #%i 0x%.8x was not destroyed.",
-		    type_name, i, (u_int32_t)widget
+"WidgetDestroyGlobals(): Warning: %s widget #%i %p was not destroyed.",
+		    type_name, i, widget
 		);
 		fprintf(stderr, "%s\n", s);
 		free(s);
@@ -1484,8 +1484,8 @@
 	  default:
 	    fprintf(
 		stderr,
-"WidgetDestroy(): Widget 0x%.8x: Unsupported widget type (type=%i).\n",
-		(u_int32_t)widget,
+"WidgetDestroy(): Widget %p: Unsupported widget type (type=%i).\n",
+		widget,
 		type
 	    );
 	    break;
--- widgets/wlist.cpp
+++ widgets/wlist.cpp
@@ -2584,7 +2584,7 @@
 
 	return(w);
 #else
-	return(NULL);
+	return(None);
 #endif
 }