diff --git a/src/errors.rs b/src/errors.rs
index 23711a9..04fd2f5 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -39,7 +39,7 @@ pub enum GDError {
     /// Couldn't automatically query.
     AutoQuery(&'static str),
     /// A protocol-defined expected format was not met.
-    ProtocolRule(&'static str),
+    ProtocolFormat(&'static str),
 }
 
 impl fmt::Display for GDError {
@@ -59,7 +59,7 @@ impl fmt::Display for GDError {
             GDError::SocketConnect(details) => write!(f, "Socket connect: {details}"),
             GDError::JsonParse(details) => write!(f, "Json parse: {details}"),
             GDError::AutoQuery(details) => write!(f, "Auto query: {details}"),
-            GDError::ProtocolRule(details) => write!(f, "Protocol rule: {details}"),
+            GDError::ProtocolFormat(details) => write!(f, "Protocol rule: {details}"),
         }
     }
 }
diff --git a/src/protocols/minecraft/protocol/legacy_bv1_8.rs b/src/protocols/minecraft/protocol/legacy_bv1_8.rs
index b935c9a..aea38d9 100644
--- a/src/protocols/minecraft/protocol/legacy_bv1_8.rs
+++ b/src/protocols/minecraft/protocol/legacy_bv1_8.rs
@@ -31,7 +31,7 @@ impl LegacyBV1_8 {
         let mut pos = 0;
 
         if get_u8(&buf, &mut pos)? != 0xFF {
-            return Err(GDError::ProtocolRule("Expected 0xFF at the begin of the packet."));
+            return Err(GDError::ProtocolFormat("Expected 0xFF at the begin of the packet."));
         }
 
         let length = get_u16_be(&buf, &mut pos)? * 2;
diff --git a/src/protocols/minecraft/protocol/legacy_v1_4.rs b/src/protocols/minecraft/protocol/legacy_v1_4.rs
index 29815be..2fc3cd8 100644
--- a/src/protocols/minecraft/protocol/legacy_v1_4.rs
+++ b/src/protocols/minecraft/protocol/legacy_v1_4.rs
@@ -32,7 +32,7 @@ impl LegacyV1_4 {
         let mut pos = 0;
 
         if get_u8(&buf, &mut pos)? != 0xFF {
-            return Err(GDError::ProtocolRule("Expected 0xFF at the begin of the packet."));
+            return Err(GDError::ProtocolFormat("Expected 0xFF at the begin of the packet."));
         }
 
         let length = get_u16_be(&buf, &mut pos)? * 2;
diff --git a/src/protocols/minecraft/protocol/legacy_v1_6.rs b/src/protocols/minecraft/protocol/legacy_v1_6.rs
index 0659261..4f203a7 100644
--- a/src/protocols/minecraft/protocol/legacy_v1_6.rs
+++ b/src/protocols/minecraft/protocol/legacy_v1_6.rs
@@ -81,14 +81,14 @@ impl LegacyV1_6 {
         let mut pos = 0;
 
         if get_u8(&buf, &mut pos)? != 0xFF {
-            return Err(GDError::ProtocolRule("Expected a certain byte (0xFF) at the begin of the packet."));
+            return Err(GDError::ProtocolFormat("Expected a certain byte (0xFF) at the begin of the packet."));
         }
 
         let length = get_u16_be(&buf, &mut pos)? * 2;
         error_by_expected_size((length + 3) as usize, buf.len())?;
 
         if !LegacyV1_6::is_protocol(&buf, &mut pos)? {
-            return Err(GDError::ProtocolRule("Expected certain bytes at the beginning of the packet."));
+            return Err(GDError::ProtocolFormat("Expected certain bytes at the beginning of the packet."));
         }
 
         LegacyV1_6::get_response(&buf, &mut pos)