diff --git a/src/proto/decoder.rs b/src/proto/decoder.rs
index 2eb7378..dfb7185 100644
--- a/src/proto/decoder.rs
+++ b/src/proto/decoder.rs
@@ -169,7 +169,7 @@ mod tests {
                 let invalid_rcodes = [11, 12, 13, 14, 15];
 
                 for rcode in invalid_rcodes {
-                    dns_query[3] = (rcode as u8) << 0;
+                    dns_query[3] = rcode;
 
                     let parse_result = DNSHeader::from_udp_datagram(&dns_query);
 
@@ -205,7 +205,7 @@ mod tests {
                 ];
 
                 for (rcode, parsed_rcode) in valid_rcodes {
-                    dns_query[3] = rcode << 0;
+                    dns_query[3] = rcode;
                     let parse_result = DNSHeader::from_udp_datagram(&dns_query);
                     assert_eq!(
                         parse_result?.response_code, parsed_rcode,
@@ -362,7 +362,7 @@ mod tests {
                     0xff, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.authorative_answer, true);
+                assert!(parse_result?.authorative_answer);
                 Ok(())
             }
 
@@ -372,7 +372,7 @@ mod tests {
                     0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.authorative_answer, false);
+                assert!(!parse_result?.authorative_answer);
                 Ok(())
             }
         }
@@ -386,7 +386,7 @@ mod tests {
                     0xff, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.truncated, true);
+                assert!(parse_result?.truncated);
                 Ok(())
             }
 
@@ -396,7 +396,7 @@ mod tests {
                     0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.truncated, false);
+                assert!(!parse_result?.truncated);
                 Ok(())
             }
         }
@@ -410,7 +410,7 @@ mod tests {
                     0xff, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.recursion_desired, true);
+                assert!(parse_result?.recursion_desired);
                 Ok(())
             }
 
@@ -420,7 +420,7 @@ mod tests {
                     0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.recursion_desired, false);
+                assert!(!parse_result?.recursion_desired);
                 Ok(())
             }
         }
@@ -434,7 +434,7 @@ mod tests {
                     0xff, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.recursion_available, true);
+                assert!(parse_result?.recursion_available);
                 Ok(())
             }
 
@@ -444,7 +444,7 @@ mod tests {
                     0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
                 ];
                 let parse_result = DNSHeader::from_udp_datagram(&dns_query);
-                assert_eq!(parse_result?.recursion_available, false);
+                assert!(!parse_result?.recursion_available);
                 Ok(())
             }
         }