diff --git a/gltext.h b/gltext.h
index 8ea680f..549137e 100644
--- a/gltext.h
+++ b/gltext.h
@@ -859,7 +859,9 @@ static const GLchar* _gltText2DFragmentShaderSource =
 "\n"
 "void main()\n"
 "{\n"
-"	fragColor = texture(diffuse, fTexCoord) * color;\n"
+"	fragColor = texture(diffuse, fTexCoord);\n"
+"	if(fragColor.a<0.5 || length(fragColor.rgb) < 0.5){discard;}\n"
+"   	fragColor *= color;"
 "}\n";
 
 GLT_API GLboolean _gltCreateText2DShader(void)
@@ -1336,4 +1338,4 @@ GLT_API GLboolean _gltCreateText2DFontTexture(void)
 }
 #endif
 
-#endif
\ No newline at end of file
+#endif