diff --git a/pkgs/applications/science/chemistry/siesta/default.nix b/pkgs/applications/science/chemistry/siesta/default.nix
index f49b9d1f45f9..c0e0e874cbd6 100644
--- a/pkgs/applications/science/chemistry/siesta/default.nix
+++ b/pkgs/applications/science/chemistry/siesta/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = false;  # Started making trouble with gcc-11
 
-  # Must do manualy becuase siesta does not do the regular
+  # Must do manually because siesta does not do the regular
   # ./configure; make; make install
   configurePhase = ''
     cd Obj