diff --git a/clippy_lints/src/if_let_some_result.rs b/clippy_lints/src/if_let_some_result.rs
index ebc8aa41937..24833705422 100644
--- a/clippy_lints/src/if_let_some_result.rs
+++ b/clippy_lints/src/if_let_some_result.rs
@@ -2,7 +2,6 @@ use crate::utils::{match_type, method_chain_args, paths, snippet_with_applicabil
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::{Expr, ExprKind, MatchSource, PatKind, QPath};
-use rustc_hir_pretty;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 
diff --git a/clippy_lints/src/matches.rs b/clippy_lints/src/matches.rs
index 4892feba3ba..8d4e8595b12 100644
--- a/clippy_lints/src/matches.rs
+++ b/clippy_lints/src/matches.rs
@@ -18,7 +18,6 @@ use rustc_hir::{
     Arm, BindingAnnotation, Block, BorrowKind, Expr, ExprKind, Local, MatchSource, Mutability, Node, Pat, PatKind,
     QPath, RangeEnd,
 };
-use rustc_hir_pretty;
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
 use rustc_span::source_map::Span;
diff --git a/clippy_lints/src/mut_reference.rs b/clippy_lints/src/mut_reference.rs
index 316df21e780..55cb7e4a087 100644
--- a/clippy_lints/src/mut_reference.rs
+++ b/clippy_lints/src/mut_reference.rs
@@ -2,7 +2,6 @@ use crate::utils::span_lint;
 use rustc::ty::subst::Subst;
 use rustc::ty::{self, Ty};
 use rustc_hir::{BorrowKind, Expr, ExprKind, Mutability};
-use rustc_hir_pretty;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 
diff --git a/clippy_lints/src/utils/inspector.rs b/clippy_lints/src/utils/inspector.rs
index 08d253d1bb4..b97fc9547e5 100644
--- a/clippy_lints/src/utils/inspector.rs
+++ b/clippy_lints/src/utils/inspector.rs
@@ -3,7 +3,6 @@
 use crate::utils::get_attr;
 use rustc_ast::ast::Attribute;
 use rustc_hir as hir;
-use rustc_hir_pretty;
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_session::Session;
 use rustc_session::{declare_lint_pass, declare_tool_lint};