diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7511962..7f5e473 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,7 +38,7 @@ else ()
 endif ()
 
 #########
-## zlib
+## libpng
 #########
 
 ExternalProject_Add (libpng_Project