diff --git a/src/build.rs b/src/build.rs
index 10d7a94..c0bcdc6 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -1,6 +1,7 @@
 use std::io::{Result, Write};
 
 pub mod board;
+pub mod error;
 pub mod movegen;
 pub mod utils;
 
diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..535bd7b
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,16 @@
+/// A singular type for all errors that could happen when using this library.
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub enum Error {
+    InvalidFen,
+}
+
+impl std::fmt::Display for Error {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        let error_msg = match self {
+            Self::InvalidFen => "Invalid FEN input",
+        };
+        write!(f, "{}", error_msg)
+    }
+}
+
+impl std::error::Error for Error {}
diff --git a/src/lib.rs b/src/lib.rs
index bfcf0bd..c1b793f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
 pub mod board;
+pub mod error;
 pub mod movegen;
 pub mod utils;