diff --git a/src/lib.rs b/src/lib.rs
index ea3ce8c5..081d1a60 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,6 +12,11 @@
 #![warn(clippy::path_buf_push_overwrite)]
 #![warn(clippy::range_plus_one)]
 #![allow(clippy::cognitive_complexity)]
+#![cfg_attr(
+    not(any(feature = "libdeflater", feature = "zopfli")),
+    allow(irrefutable_let_patterns),
+    allow(unreachable_patterns)
+)]
 
 #[cfg(feature = "parallel")]
 extern crate rayon;
@@ -219,10 +224,6 @@ impl Options {
     // on an `Options` struct generated by the `default` method.
     fn apply_preset_0(mut self) -> Self {
         self.idat_recoding = false;
-        #[cfg_attr(
-            not(any(feature = "zopfli", feature = "libdeflater")),
-            allow(irrefutable_let_patterns)
-        )]
         if let Deflaters::Zlib { compression, .. } = &mut self.deflate {
             compression.clear();
             compression.insert(3);
@@ -232,10 +233,6 @@ impl Options {
 
     fn apply_preset_1(mut self) -> Self {
         self.filter.clear();
-        #[cfg_attr(
-            not(any(feature = "zopfli", feature = "libdeflater")),
-            allow(irrefutable_let_patterns)
-        )]
         if let Deflaters::Zlib { strategies, .. } = &mut self.deflate {
             strategies.clear();
         }
@@ -259,10 +256,6 @@ impl Options {
     }
 
     fn apply_preset_5(mut self) -> Self {
-        #[cfg_attr(
-            not(any(feature = "zopfli", feature = "libdeflater")),
-            allow(irrefutable_let_patterns)
-        )]
         if let Deflaters::Zlib { compression, .. } = &mut self.deflate {
             compression.clear();
             for i in 3..9 {
@@ -273,10 +266,6 @@ impl Options {
     }
 
     fn apply_preset_6(mut self) -> Self {
-        #[cfg_attr(
-            not(any(feature = "zopfli", feature = "libdeflater")),
-            allow(irrefutable_let_patterns)
-        )]
         if let Deflaters::Zlib { compression, .. } = &mut self.deflate {
             compression.clear();
             for i in 1..3 {
@@ -479,10 +468,6 @@ fn optimize_png(
     info!("    File size = {} bytes", file_original_size);
 
     let mut filter = opts.filter.clone();
-    #[cfg_attr(
-        not(any(feature = "zopfli", feature = "libdeflater")),
-        allow(unreachable_patterns)
-    )]
     let mut strategies = match &opts.deflate {
         Deflaters::Zlib { strategies, .. } => Some(strategies.clone()),
         _ => None,
@@ -524,10 +509,6 @@ fn optimize_png(
 
     if opts.idat_recoding || reduction_occurred {
         // Go through selected permutations and determine the best
-        #[cfg_attr(
-            not(any(feature = "zopfli", feature = "libdeflater")),
-            allow(irrefutable_let_patterns)
-        )]
         let combinations = if let Deflaters::Zlib { compression, .. } = &opts.deflate {
             filter.len() * compression.len() * strategies.as_ref().unwrap().len()
         } else {
@@ -536,10 +517,6 @@ fn optimize_png(
         let mut results: Vec<TrialOptions> = Vec::with_capacity(combinations);
 
         for f in &filter {
-            #[cfg_attr(
-                not(any(feature = "zopfli", feature = "libdeflater")),
-                allow(irrefutable_let_patterns)
-            )]
             if let Deflaters::Zlib { compression, .. } = &opts.deflate {
                 for zc in compression {
                     for zs in strategies.as_ref().unwrap() {