diff --git a/make.jl b/make.jl
index 7209b51..46cdeb1 100644
--- a/make.jl
+++ b/make.jl
@@ -19,6 +19,7 @@ pages = [
             "Introduction" => "quantumsystems/quantumsystems.md",
             "quantumsystems/spin.md",
             "quantumsystems/fock.md",
+            "quantumsystems/charge.md",
             "quantumsystems/nlevel.md",
             "quantumsystems/particle.md",
             "quantumsystems/subspace.md",