diff --git a/src/JET.jl b/src/JET.jl
index fc0b2e27a..8280e92bd 100644
--- a/src/JET.jl
+++ b/src/JET.jl
@@ -52,13 +52,10 @@ import .CC:
     inlining_policy
 
 # `ConcreteInterpreter`
-import JuliaInterpreter:
-    #= interpreter.jl =#
-    evaluate_call_recurse!, handle_err, step_expr!
+import JuliaInterpreter: evaluate_call_recurse!, handle_err, step_expr!
 
 # Test.jl integration
-import Test:
-    record
+import Test: record
 
 # usings
 # ======
@@ -80,15 +77,11 @@ using .CC: ⊑,
     istopfunction, may_invoke_generator, singleton_type, slot_id, specialize_method,
     switchtupleunion, tmerge, widenconst
 
-using Base:
-    @invoke, @invokelatest, IdSet, default_tt, destructure_callex, parse_input_line,
-    rewrap_unionall, uniontypes, unwrap_unionall
+using Base: IdSet
 
-using Base.Meta:
-    ParseError, _parse_string, isexpr, lower
+using Base.Meta: ParseError, _parse_string, isexpr, lower
 
-using Base.Experimental:
-    @MethodTable, @overlay
+using Base.Experimental: @MethodTable, @overlay
 
 using LoweredCodeUtils, JuliaInterpreter
 
@@ -101,8 +94,7 @@ using JuliaInterpreter:
     @lookup, _INACTIVE_EXCEPTION, bypass_builtins, collect_args, #=finish!,=#
     is_quotenode_egal, is_return, maybe_evaluate_builtin, moduleof
 
-using MacroTools:
-    @capture, MacroTools, normalise, striplines
+using MacroTools: @capture, MacroTools, normalise, striplines
 
 using InteractiveUtils
 
@@ -718,7 +710,7 @@ Finally returns the analysis result as [`JETCallResult`](@ref).
 Note that this is intended to be used by developers of `AbstractAnalyzer` only.
 General users should use high-level entry points like [`report_call`](@ref) and [`report_opt`](@ref).
 """
-function analyze_and_report_call!(analyzer::AbstractAnalyzer, @nospecialize(f), @nospecialize(types = default_tt(f));
+function analyze_and_report_call!(analyzer::AbstractAnalyzer, @nospecialize(f), @nospecialize(types = Base.default_tt(f));
                                   jetconfigs...)
     tt = Base.signature_type(f, types)
     return analyze_and_report_call!(analyzer, tt::Type{<:Tuple}; jetconfigs...)
diff --git a/src/analyzers/jetanalyzer.jl b/src/analyzers/jetanalyzer.jl
index c69865076..c514c220c 100644
--- a/src/analyzers/jetanalyzer.jl
+++ b/src/analyzers/jetanalyzer.jl
@@ -1346,7 +1346,7 @@ function report_fieldaccess!(analyzer::JETAnalyzer, sv::InferenceState, @nospeci
     end
 
     isa(name, Const) || return false
-    s = unwrap_unionall(s00)
+    s = Base.unwrap_unionall(s00)
     if isType(s)
         if f === fieldtype
             # XXX this is a hack to share more code between `getfield`/`setfield!`/`fieldtype`
diff --git a/src/toplevel/virtualprocess.jl b/src/toplevel/virtualprocess.jl
index 1042ff6f7..321eb633e 100644
--- a/src/toplevel/virtualprocess.jl
+++ b/src/toplevel/virtualprocess.jl
@@ -579,7 +579,7 @@ function _virtual_process!(res::VirtualProcessResult,
     push!(res.files_stack, filename)
 
     s = String(s)::String
-    toplevelex = parse_input_line(s; filename)
+    toplevelex = Base.parse_input_line(s; filename)
 
     if isexpr(toplevelex, (:error, :incomplete))
         # if there's any syntax error, try to identify all the syntax error location
diff --git a/test/self_check.jl b/test/self_check.jl
index e6e868e51..54f3dce60 100644
--- a/test/self_check.jl
+++ b/test/self_check.jl
@@ -37,7 +37,7 @@ let target_modules = (JET,)
             f === JET.copy_report ||
             f === JET.handle_sig! ||
             f === JET._which ||
-            f === JET.rewrap_unionall ||
+            f === Base.rewrap_unionall ||
             f === JET.nameof ||
             false)
             return false