diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e74cf0b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+# Rust
+/target
+/Cargo.lock
+
+# CLion
+/.idea/*
+!/.idea/runConfigurations
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe57fca..6d6b13e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 # [unreleased]
 
+## Added
+
+- Added `.gitignore`.
+
+## Fixed
+
+- Correct manual implementation of Trait `PartialEq` for `PusTc`. The previous auto-derivation was
+  incorrect because it also compared fields unrelated to the raw byte representation.
+
 # [v0.5.1] 2023-01-22
 
 ## Added
diff --git a/src/tc.rs b/src/tc.rs
index d70aa9e..91284e0 100644
--- a/src/tc.rs
+++ b/src/tc.rs
@@ -213,7 +213,7 @@ impl PusTcSecondaryHeader {
 /// serde provider like [postcard](https://docs.rs/postcard/latest/postcard/).
 ///
 /// There is no spare bytes support yet.
-#[derive(PartialEq, Eq, Copy, Clone, Debug)]
+#[derive(Eq, Copy, Clone, Debug)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct PusTc<'app_data> {
     sp_header: SpHeader,
@@ -440,6 +440,14 @@ impl<'app_data> PusTc<'app_data> {
     }
 }
 
+impl PartialEq for PusTc<'_> {
+    fn eq(&self, other: &Self) -> bool {
+        self.sp_header == other.sp_header
+            && self.sec_header == other.sec_header
+            && self.app_data == other.app_data
+    }
+}
+
 //noinspection RsTraitImplementation
 impl CcsdsPacket for PusTc<'_> {
     ccsds_impl!();
@@ -736,4 +744,20 @@ mod tests {
         assert_eq!(slice[11], 0xee);
         assert_eq!(slice[12], 0x63);
     }
+
+    #[test]
+    fn partial_eq_pus_tc() {
+        // new vs new simple
+        let pus_tc_1 = base_ping_tc_simple_ctor();
+        let pus_tc_2 = base_ping_tc_full_ctor();
+        assert_eq!(pus_tc_1, pus_tc_2);
+    }
+
+    #[test]
+    fn partial_eq_serialized_vs_derialized() {
+        let pus_tc = base_ping_tc_simple_ctor();
+        let mut buf = [0; 32];
+        let size = pus_tc.write_to_bytes(&mut buf).unwrap();
+        assert_eq!(pus_tc, PusTc::from_bytes(&buf).unwrap().0);
+    }
 }