diff --git a/stb_easy_font.h b/stb_easy_font.h
index a7e4227..4dee383 100644
--- a/stb_easy_font.h
+++ b/stb_easy_font.h
@@ -1,4 +1,4 @@
-// stb_easy_font.h - v0.5 - bitmap font for 3D rendering - public domain
+// stb_easy_font.h - v0.6 - bitmap font for 3D rendering - public domain
 // Sean Barrett, Feb 2015
 //
 //    Easy-to-deploy,
@@ -74,6 +74,11 @@
 //   recognized, you are granted a perpetual, irrevocable license to copy,
 //   distribute, and modify this file as you see fit.
 //
+// VERSION HISTORY
+//
+//   (2015-09-13)  0.6   #include <math.h>; updated license
+//   (2015-02-01)  0.5   First release
+
 #if 0
 void print_string(float x, float y, char *text, float r, float g, float b)
 {
diff --git a/tests/test_c_compilation.c b/tests/test_c_compilation.c
index 309be5a..de25330 100644
--- a/tests/test_c_compilation.c
+++ b/tests/test_c_compilation.c
@@ -8,7 +8,9 @@
 #define STB_IMAGE_RESIZE_IMPLEMENTATION
 #define STB_RECT_PACK_IMPLEMENTATION
 #define STB_VOXEL_RENDER_IMPLEMENTATION
+#define STB_EASY_FONT_IMPLEMENTATION
 
+#include "stb_easy_font.h"
 #include "stb_herringbone_wang_tile.h"
 #include "stb_image.h"
 #include "stb_image_write.h"