diff -urp a/src/textures/rgbe_texture.cc b/src/textures/rgbe_texture.cc
--- a/src/textures/rgbe_texture.cc	2008-08-27 15:12:20.000000000 -0500
+++ b/src/textures/rgbe_texture.cc	2016-03-07 21:57:16.016998548 -0600
@@ -111,10 +111,10 @@ gBuf_t<rgbe_t, 1>* loadHDR(const char* f
 {
 	FILE *file = fopen(filename,"rb");
 	int xmax, ymax;
-	if (file==NULL) return false;
+	if (file==NULL) return NULL;
 	if (!checkHDR(file, xmax, ymax)) {
 		fclose(file);
-		return false;
+		return NULL;
 	}
 	bool ok=true;
 	gBuf_t<rgbe_t, 1> *image = new gBuf_t<rgbe_t, 1>(xmax, ymax);
diff -urp a/src/yafraycore/font_frankbook.cc b/src/yafraycore/font_frankbook.cc
--- a/src/yafraycore/font_frankbook.cc	2007-10-03 05:29:28.000000000 -0500
+++ b/src/yafraycore/font_frankbook.cc	2016-03-07 21:47:12.290267985 -0600
@@ -1,7 +1,7 @@
 /* DataToC output of file <FranKleinBook_ttf> */
 
 int font_ttf_size= 84484;
-char font_ttf[]= {
+unsigned char font_ttf[]= {
   0,  1,  0,  0,
   0, 11,  0,128,  0,  3,  0, 48, 79, 83, 47, 50, 19, 41,185, 28,  0,  0,  1, 56,  0,  0,  0, 78, 99,109, 97,112, 69,192,131,251,
   0,  0,  5,128,  0,  0,  2,  6,103,108,121,102,183,  2,204,127,  0,  0,  9,136,  0,  0, 92,100,104,101, 97,100,218, 82,110, 92,