diff --git a/compiler/CHANGELOG.md b/compiler/CHANGELOG.md
index f4d0ca5..cd457e3 100644
--- a/compiler/CHANGELOG.md
+++ b/compiler/CHANGELOG.md
@@ -10,12 +10,16 @@
 - [ ] Namespace identifiers in the symbol table
 - [ ] Stdlib
 - [ ] Document code
-- [ ] Test that the field `position` of the tokens actually points to the start of the token, and not its length
+
+## v0.0.5
+
+- ...
 
 ## v0.0.4
 
 - Explicit datatype of variables
 - Improve error messages when a syntax error is found (show offending line and offending token)
+- Show different error messages for val/var binding
 
 ## v0.0.3
 
diff --git a/compiler/Cargo.lock b/compiler/Cargo.lock
index 2432e49..2f32110 100644
--- a/compiler/Cargo.lock
+++ b/compiler/Cargo.lock
@@ -313,7 +313,7 @@ dependencies = [
 
 [[package]]
 name = "misti"
-version = "0.0.3"
+version = "0.0.4"
 dependencies = [
  "chrono",
  "clap",
diff --git a/compiler/Cargo.toml b/compiler/Cargo.toml
index afd5e3c..dc680e0 100644
--- a/compiler/Cargo.toml
+++ b/compiler/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "misti"
-version = "0.0.3"
+version = "0.0.4"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
diff --git a/compiler/src/syntax/binding.rs b/compiler/src/syntax/binding.rs
index 028e708..d573884 100644
--- a/compiler/src/syntax/binding.rs
+++ b/compiler/src/syntax/binding.rs
@@ -76,7 +76,7 @@ pub fn try_parse<'a>(tokens: &'a Vec<Token>, pos: usize) -> Option<SyntaxResult>
     /*
      * Equal (=) operator
      */
-    let _equal_operator: &Token = match try_operator(tokens, pos + 2, String::from("=")) {
+    let equal_operator: &Token = match try_operator(tokens, pos + 2, String::from("=")) {
         Result3::Ok(t) => t,
         Result3::Err(t) => {
             // The parser found a token, but it's not the `=` operator
@@ -98,8 +98,11 @@ pub fn try_parse<'a>(tokens: &'a Vec<Token>, pos: usize) -> Option<SyntaxResult>
 
     let expression = expression::try_parse(tokens, pos + 3);
     if expression.is_none() {
-        // TODO: return Error
-        return None;
+        return Some(SyntaxResult::Err(SyntaxError {
+            reason: String::from("Expected an expression after the equal `=` operator"),
+            error_start: equal_operator.position,
+            error_end: equal_operator.get_end_position(),
+        }));
     }
     let expression = expression.unwrap();