diff --git a/advanced-reactor.html b/advanced-reactor.html
index 6594947..9ea7e23 100644
--- a/advanced-reactor.html
+++ b/advanced-reactor.html
@@ -82,7 +82,7 @@
                         value: "Generalised",
                         options: [
                             { value: "Generalised", label: "Generalised"},
-                            { value: "Diriclet", label: "Diriclet"},
+                            { value: "Dirichlet", label: "Dirichlet"},
                             { value: "Danckwerts", label: "Danckwerts"}
                         ]
                     }
diff --git a/src/specificClass.js b/src/specificClass.js
index e670eb5..1124b0d 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -210,7 +210,7 @@ class Reactor_PFR extends Reactor {
             BC_gradient[1] = 1;
             let BC_term = 0;
             switch(this.BC) {
-                case "Diriclet":
+                case "Dirichlet":
                     BC_term = 0;
                     break;
                 case "Danckwerts":