diff --git a/src/proto.rs b/src/proto.rs
index 9c2f26f..c97723c 100644
--- a/src/proto.rs
+++ b/src/proto.rs
@@ -332,7 +332,7 @@ 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);
 
@@ -368,7 +368,7 @@ 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,
@@ -525,7 +525,7 @@ 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(())
             }
 
@@ -535,7 +535,7 @@ 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(())
             }
         }
@@ -549,7 +549,7 @@ 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(())
             }
 
@@ -559,7 +559,7 @@ 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(())
             }
         }
@@ -573,7 +573,7 @@ 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(())
             }
 
@@ -583,7 +583,7 @@ 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(())
             }
         }
@@ -597,7 +597,7 @@ 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(())
             }
 
@@ -607,7 +607,7 @@ 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(())
             }
         }