diff --git a/src/renderer_gl.h b/src/renderer_gl.h
index 0522f8ee..b38ed106 100644
--- a/src/renderer_gl.h
+++ b/src/renderer_gl.h
@@ -321,6 +321,18 @@ typedef uint64_t GLuint64;
 #	define GL_R11F_G11F_B10F 0x8C3A
 #endif // GL_R11F_G11F_B10F
 
+#ifndef GL_UNSIGNED_SHORT_5_6_5_REV
+#	define GL_UNSIGNED_SHORT_5_6_5_REV 0x8364
+#endif // GL_UNSIGNED_SHORT_5_6_5_REV
+
+#ifndef GL_UNSIGNED_SHORT_1_5_5_5_REV
+#	define GL_UNSIGNED_SHORT_1_5_5_5_REV 0x8366
+#endif // GL_UNSIGNED_SHORT_1_5_5_5_REV
+
+#ifndef GL_UNSIGNED_SHORT_4_4_4_4_REV
+#	define GL_UNSIGNED_SHORT_4_4_4_4_REV 0x8365
+#endif // GL_UNSIGNED_SHORT_4_4_4_4_REV
+
 #ifndef GL_UNSIGNED_INT_10F_11F_11F_REV
 #	define GL_UNSIGNED_INT_10F_11F_11F_REV 0x8C3B
 #endif // GL_UNSIGNED_INT_10F_11F_11F_REV