diff --git a/Project.toml b/Project.toml
index 93091014..02b34ac5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "DynamicExpressions"
 uuid = "a40a106e-89c9-4ca8-8020-a735e8728b6b"
 authors = ["MilesCranmer <miles.cranmer@gmail.com>"]
-version = "1.4.1"
+version = "1.5.0"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
diff --git a/src/Interfaces.jl b/src/Interfaces.jl
index 346db23d..2875ef65 100644
--- a/src/Interfaces.jl
+++ b/src/Interfaces.jl
@@ -123,7 +123,9 @@ function _check_set_constants!(ex::AbstractExpression)
     return first(get_scalar_constants(ex)) ≈ x2
 end
 function _check_string_tree(ex::AbstractExpression)
-    return string_tree(ex) isa AbstractString
+    return string_tree(ex) isa AbstractString &&
+           string_tree(ex; pretty=false) isa AbstractString &&
+           string_tree(ex; pretty=true) isa AbstractString
 end
 function _check_default_node(ex::AbstractExpression{T}) where {T}
     ET = typeof(ex)
diff --git a/src/ParametricExpression.jl b/src/ParametricExpression.jl
index 0eb5db04..7f0ae660 100644
--- a/src/ParametricExpression.jl
+++ b/src/ParametricExpression.jl
@@ -360,7 +360,6 @@ function string_tree(
     display_variable_names=nothing,
     X_sym_units=nothing,
     y_sym_units=nothing,
-    raw=false,
     kws...,
 )
     # TODO: HACK we ignore display_variable_names and others
diff --git a/src/Strings.jl b/src/Strings.jl
index 81fc7f31..c4a3f0dd 100644
--- a/src/Strings.jl
+++ b/src/Strings.jl
@@ -140,9 +140,14 @@ function string_tree(
     f_variable::F1=string_variable,
     f_constant::F2=string_constant,
     variable_names::Union{AbstractVector{<:AbstractString},Nothing}=nothing,
+    pretty::Union{Bool,Nothing}=nothing, # Not used, but can be used by other types
     # Deprecated
+    raw::Union{Bool,Nothing}=nothing,
     varMap=nothing,
 )::String where {T,F1<:Function,F2<:Function}
+    !isnothing(raw) &&
+        Base.depwarn("`raw` is deprecated; use `pretty` instead", :string_tree)
+    pretty = @something(pretty, _not(raw), false)
     variable_names = deprecate_varmap(variable_names, varMap, :string_tree)
     raw_output = tree_mapreduce(
         let f_constant = f_constant,
@@ -186,14 +191,22 @@ for io in ((), (:(io::IO),))
         f_variable::F1=string_variable,
         f_constant::F2=string_constant,
         variable_names::Union{AbstractVector{<:AbstractString},Nothing}=nothing,
+        pretty::Union{Bool,Nothing}=nothing, # Not used, but can be used by other types
         # Deprecated
+        raw::Union{Bool,Nothing}=nothing,
         varMap=nothing,
     ) where {F1<:Function,F2<:Function}
+        !isnothing(raw) &&
+            Base.depwarn("`raw` is deprecated; use `pretty` instead", :print_tree)
+        pretty = @something(pretty, _not(raw), false)
         variable_names = deprecate_varmap(variable_names, varMap, :print_tree)
         return println(
-            $(io...), string_tree(tree, operators; f_variable, f_constant, variable_names)
+            $(io...),
+            string_tree(tree, operators; f_variable, f_constant, variable_names, pretty),
         )
     end
 end
+_not(::Nothing) = nothing
+_not(x) = !x
 
 end