diff --git a/source/Irrlicht/CImageWriterPNG.cpp b/source/Irrlicht/CImageWriterPNG.cpp
index 100b56c3..920ce5fc 100644
--- a/source/Irrlicht/CImageWriterPNG.cpp
+++ b/source/Irrlicht/CImageWriterPNG.cpp
@@ -87,9 +87,10 @@ bool CImageWriterPNG::writeImage(io::IWriteFile* file, IImage* image,u32 param)
 		return false;
 	}
 
-	// Set compression level 
-	// Sadly Irrlicht used param=0 as default and an u32 type
-	// So to avoid breaking downward compatibility we keep 0 as default (which is -1 in zlib) and subtract 1 from param to everything into zlib range
+	// Set compression level
+	// Sadly Irrlicht used param=0 as default and an u32 type.
+	// So to avoid breaking downward compatibility we keep 0 as default (which is -1 in zlib) 
+	// and subtract 1 from param to get everything into zlib range.
 	if (param <= 10)	// Z_BEST_COMPRESSION is 9 - values above have so far no meaning
 		png_set_compression_level(png_ptr, (int)param-1);