diff --git a/src/explorer/mod.rs b/src/explorer/mod.rs
index bbdad62..cfb119e 100644
--- a/src/explorer/mod.rs
+++ b/src/explorer/mod.rs
@@ -10,7 +10,6 @@ use std::cmp::Reverse;
 use std::collections::VecDeque;
 use std::path::{Path, PathBuf};
 use std::str::FromStr;
-use std::string::ToString;
 
 use formatter::Formatter;
 // Ext
@@ -243,14 +242,18 @@ impl FileExplorer {
 
 // Traits
 
-impl ToString for FileSorting {
-    fn to_string(&self) -> String {
-        String::from(match self {
-            FileSorting::CreationTime => "by_creation_time",
-            FileSorting::ModifyTime => "by_mtime",
-            FileSorting::Name => "by_name",
-            FileSorting::Size => "by_size",
-        })
+impl std::fmt::Display for FileSorting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                FileSorting::CreationTime => "by_creation_time",
+                FileSorting::ModifyTime => "by_mtime",
+                FileSorting::Name => "by_name",
+                FileSorting::Size => "by_size",
+            }
+        )
     }
 }
 
@@ -267,12 +270,16 @@ impl FromStr for FileSorting {
     }
 }
 
-impl ToString for GroupDirs {
-    fn to_string(&self) -> String {
-        String::from(match self {
-            GroupDirs::First => "first",
-            GroupDirs::Last => "last",
-        })
+impl std::fmt::Display for GroupDirs {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                GroupDirs::First => "first",
+                GroupDirs::Last => "last",
+            }
+        )
     }
 }
 
diff --git a/src/filetransfer/mod.rs b/src/filetransfer/mod.rs
index a9d6cd2..ab9ddab 100644
--- a/src/filetransfer/mod.rs
+++ b/src/filetransfer/mod.rs
@@ -23,19 +23,23 @@ pub enum FileTransferProtocol {
 
 // Traits
 
-impl std::string::ToString for FileTransferProtocol {
-    fn to_string(&self) -> String {
-        String::from(match self {
-            FileTransferProtocol::AwsS3 => "S3",
-            FileTransferProtocol::Ftp(secure) => match secure {
-                true => "FTPS",
-                false => "FTP",
-            },
-            FileTransferProtocol::Scp => "SCP",
-            FileTransferProtocol::Sftp => "SFTP",
-            FileTransferProtocol::Smb => "SMB",
-            FileTransferProtocol::WebDAV => "WEBDAV",
-        })
+impl std::fmt::Display for FileTransferProtocol {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                FileTransferProtocol::AwsS3 => "S3",
+                FileTransferProtocol::Ftp(secure) => match secure {
+                    true => "FTPS",
+                    false => "FTP",
+                },
+                FileTransferProtocol::Scp => "SCP",
+                FileTransferProtocol::Sftp => "SFTP",
+                FileTransferProtocol::Smb => "SMB",
+                FileTransferProtocol::WebDAV => "WEBDAV",
+            }
+        )
     }
 }
 
diff --git a/src/ui/store.rs b/src/ui/store.rs
index 68f5ed5..8fd24ca 100644
--- a/src/ui/store.rs
+++ b/src/ui/store.rs
@@ -81,7 +81,7 @@ impl Store {
 
     /// Check if a state is set in the store
     pub fn isset(&self, key: &str) -> bool {
-        self.store.get(key).is_some()
+        self.store.contains_key(key)
     }
 
     // -- setters