diff --git a/example.ipynb b/example.ipynb
index 374ba65..c52e018 100644
--- a/example.ipynb
+++ b/example.ipynb
@@ -25,10 +25,10 @@
     "N = 6\n",
     "L::T = 12\n",
     "ϕ::T = 0.0\n",
-    "mu::T = 0.5\n",
+    "μ::T = 0.5\n",
     "n_imag = 1\n",
     "\n",
-    "H = HOperator{T}(V_gauss, d, n, N, L, ϕ, mu, n_imag)\n",
+    "H = HOperator{T}(V_gauss, d, n, N, L, ϕ, μ, n_imag)\n",
     "@time evals, evecs, info = eig(H, 5)\n",
     "print(info.numops, \" operations : \")\n",
     "println(evals)"
@@ -50,10 +50,10 @@
     "N = 32\n",
     "L::T = 16\n",
     "ϕ::T = 0.5\n",
-    "mu::T = 0.5\n",
+    "μ::T = 0.5\n",
     "n_imag = 0\n",
     "\n",
-    "H = HOperator{T}(V_gauss, d, n, N, L, ϕ, mu, n_imag)\n",
+    "H = HOperator{T}(V_gauss, d, n, N, L, ϕ, μ, n_imag)\n",
     "@time evals, evecs, info = eig(H, 20)\n",
     "print(info.numops, \" operations : \")\n",
     "print(evals)\n",