diff --git a/SConstruct b/SConstruct
index a24b2ea..ffaf303 100644
--- a/SConstruct
+++ b/SConstruct
@@ -47,7 +47,7 @@ import os.path
 env = Environment(CC='clang',
                   CFLAGS='-Wall -fcolor-diagnostics',
                   CPPPATH=include_directories,
-                  LINKFLAGS='',
+                  LINKFLAGS='-lpng',
                   LIBPATH=lib_directories)