diff --git a/pkgs/tools/X11/sct/default.nix b/pkgs/tools/X11/sct/default.nix
index 4bf62e53f55b..1890e9c5266b 100644
--- a/pkgs/tools/X11/sct/default.nix
+++ b/pkgs/tools/X11/sct/default.nix
@@ -4,7 +4,15 @@ stdenv.mkDerivation rec {
   buildInputs = [libX11 libXrandr];
   src = fetchurl {
     url = http://www.tedunangst.com/flak/files/sct.c;
-    sha256 = "1bivy0sl5v1jsq4jbq6p9hplz6cvw4nx9rc96p2kxsg506rqllc5";
+    sha256 = "01f3ndx3s6d2qh2xmbpmhd4962dyh8yp95l87xwrs4plqdz6knhd";
+    
+    # Discussion regarding the checksum and the source code can be found in issue #17163 
+    # The code seems unmaintained, yet an unknown (probably small change) in the code caused 
+    # failed builds as the checksum had changed.
+    # The checksum is updated for now, however, this is unpractical and potentially unsafe 
+    # so any future changes might warrant a fork of the (feature complete) project. 
+    # The code is under public domain.
+    
   };
   phases = ["patchPhase" "buildPhase" "installPhase"];
   patchPhase = ''