diff --git a/pegasus/default.nix b/pegasus/default.nix
index cd2b4e2..d51264e 100644
--- a/pegasus/default.nix
+++ b/pegasus/default.nix
@@ -3,22 +3,22 @@
 let
     version = "0489d47b191ecf8501787355b948801506e7c70f";
     src = fetchFromGitHub {
-	owner = "DanilaFe";
-	repo = "pegasus";
-	rev = version;
-	sha256 = "097m7l16byis07xlg97wn5hdsz9k6c3h1ybzd2i7xhkj24kx230s";
+        owner = "DanilaFe";
+        repo = "pegasus";
+        rev = version;
+        sha256 = "097m7l16byis07xlg97wn5hdsz9k6c3h1ybzd2i7xhkj24kx230s";
     };
 in
     crystal.buildCrystalPackage {
         pname = "pegasus";
-	inherit version;
-    	inherit src;
+        inherit version;
+        inherit src;
 
-	crystalBinaries.pegasus.src = "src/pegasus.cr";
-	crystalBinaries.pegasus-dot.src = "src/tools/dot/pegasus_dot.cr";
-	crystalBinaries.pegasus-sim.src = "src/tools/sim/pegasus_sim.cr";
-	crystalBinaries.pegasus-c.src = "src/generators/c/pegasus_c.cr";
-	crystalBinaries.pegasus-csem.src = "src/generators/csem/pegasus_csem.cr";
-	crystalBinaries.pegasus-crystal.src = "src/generators/crystal/pegasus_crystal.cr";
-	crystalBinaries.pegasus-crystalsem.src = "src/generators/crystalsem/pegasus_crystalsem.cr";
+        crystalBinaries.pegasus.src = "src/pegasus.cr";
+        crystalBinaries.pegasus-dot.src = "src/tools/dot/pegasus_dot.cr";
+        crystalBinaries.pegasus-sim.src = "src/tools/sim/pegasus_sim.cr";
+        crystalBinaries.pegasus-c.src = "src/generators/c/pegasus_c.cr";
+        crystalBinaries.pegasus-csem.src = "src/generators/csem/pegasus_csem.cr";
+        crystalBinaries.pegasus-crystal.src = "src/generators/crystal/pegasus_crystal.cr";
+        crystalBinaries.pegasus-crystalsem.src = "src/generators/crystalsem/pegasus_crystalsem.cr";
     }