diff --git a/pkgs/development/octave-modules/level-set/default.nix b/pkgs/development/octave-modules/level-set/default.nix
index 3cce6f2cad55..3cc0873e3813 100644
--- a/pkgs/development/octave-modules/level-set/default.nix
+++ b/pkgs/development/octave-modules/level-set/default.nix
@@ -23,7 +23,7 @@ buildOctavePackage rec {
   # corrected to have a %s format specifier. However, logic_error() also
   # exists, (a simple regex also matches that), but logic_error() doesn't
   # require a format specifier. So, this regex was born to handle that...
-  patchPhase = ''
+  postPatch = ''
     substituteInPlace build.sh --replace "level-set-0.3.1" "${pname}-${version}" \
                                --replace "\`pwd\`" '/build'
     sed -i -E 's#[^[:graph:]]error \(# error \(\"%s\", #g' src/*.cpp
@@ -51,7 +51,7 @@ buildOctavePackage rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ KarlJoad ];
     description = "Routines for calculating the time-evolution of the level-set equation and extracting geometric information from the level-set function";
-    # /build/level-set-2019-04-13.tar.gz: Cannot open: No such file or directory
-    broken = stdenv.isDarwin;
+    # Got broke with octave 8.x update, and wasn't updated since 2019
+    broken = true;
   };
 }