diff --git a/src/ljl_expressions.jl b/src/ljl_expressions.jl
index da6defa6..ce88e178 100644
--- a/src/ljl_expressions.jl
+++ b/src/ljl_expressions.jl
@@ -35,7 +35,7 @@ const ljl_expr_allowed_heads = (:call, :macrocall, :||, :&&, :comparison)
 const ljl_expr_allowed_funcs = Set([
     :!,
     :(==), :<, :>, :>=, :<=, :!=,
-    :isapprox, :≈, :≈,
+    :isapprox, :≈,
     :in, :∈, :..,
     :+, :-, :*, :/,
     :^, :sqrt,