diff --git a/base/range.jl b/base/range.jl
index 8b30222382c9a..ce2d2e2821c24 100644
--- a/base/range.jl
+++ b/base/range.jl
@@ -1485,7 +1485,7 @@ end
 """
     mod(x::Integer, r::AbstractUnitRange)
 
-Find `y` in the range `r` such that ``x ≡ y (mod n)``, where `n = length(r)`,
+Find `y` in the range `r` such that ``x ≡ y (\\mod n)``, where `n = length(r)`,
 i.e. `y = mod(x - first(r), n) + first(r)`.
 
 See also [`mod1`](@ref).