diff --git a/pkgs/applications/misc/bitcoin/default.nix b/pkgs/applications/misc/bitcoin/default.nix
index 763df6e2af3b..ff70cbbff872 100644
--- a/pkgs/applications/misc/bitcoin/default.nix
+++ b/pkgs/applications/misc/bitcoin/default.nix
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "https://bitcoin.org/bin/${version}/${name}-linux.tar.gz";
-	 sha256 = "0060f7d38b98113ab912d4c184000291d7f026eaf77ca5830deec15059678f54";
+    sha256 = "0060f7d38b98113ab912d4c184000291d7f026eaf77ca5830deec15059678f54";
   };
 
   # hexdump from utillinux is required for tests