diff --git a/crates/oxide_compiler/src/hash.rs b/crates/oxide_compiler/src/hash.rs
index 92f158c..96e7909 100644
--- a/crates/oxide_compiler/src/hash.rs
+++ b/crates/oxide_compiler/src/hash.rs
@@ -23,6 +23,11 @@ fn hash_statement(stmt: &Statement, h: &mut rustc_hash::FxHasher) {
         Statement::VariableDeclaration(decl) => {
             1u8.hash(h);
             (decl.declarations.len() as u32).hash(h);
+            for d in &decl.declarations {
+                if let Some(init) = &d.init {
+                    hash_expression(init, h);
+                }
+            }
         }
         Statement::ReturnStatement(ret) => {
             2u8.hash(h);
@@ -108,6 +113,21 @@ fn hash_expression(expr: &Expression, h: &mut rustc_hash::FxHasher) {
             hash_expression(&cond.consequent, h);
             hash_expression(&cond.alternate, h);
         }
+        Expression::Identifier(_) => {
+            5u8.hash(h);
+        }
+        Expression::NumericLiteral(num) => {
+            6u8.hash(h);
+            num.value.to_bits().hash(h);
+        }
+        Expression::StringLiteral(s) => {
+            7u8.hash(h);
+            s.value.hash(h);
+        }
+        Expression::BooleanLiteral(b) => {
+            8u8.hash(h);
+            b.value.hash(h);
+        }
         _ => {
             std::mem::discriminant(expr).hash(h);
         }
diff --git a/crates/oxide_compiler/tests/compiler_tests.rs b/crates/oxide_compiler/tests/compiler_tests.rs
index 83ce800..d49281c 100644
--- a/crates/oxide_compiler/tests/compiler_tests.rs
+++ b/crates/oxide_compiler/tests/compiler_tests.rs
@@ -103,10 +103,31 @@ fn structural_hash_hit() {
 #[test]
 fn structural_hash_same_shape() {
     let hash_a = parse_to_hash("var x = 1 + 2; var y = x;");
-    let hash_b = parse_to_hash("var a = 3 + 4; var b = a;");
+    let hash_b = parse_to_hash("var a = 1 + 2; var b = a;");
     assert_eq!(hash_a, hash_b);
 }
 
+#[test]
+fn structural_hash_different_init_values() {
+    let hash_a = parse_to_hash("var x = 1 + 2;");
+    let hash_b = parse_to_hash("var y = 3 + 4;");
+    assert_ne!(hash_a, hash_b);
+}
+
+#[test]
+fn structural_hash_different_string_literals() {
+    let hash_a = parse_to_hash(r#"var x = "hello";"#);
+    let hash_b = parse_to_hash(r#"var x = "world";"#);
+    assert_ne!(hash_a, hash_b);
+}
+
+#[test]
+fn structural_hash_different_booleans() {
+    let hash_a = parse_to_hash("var x = true;");
+    let hash_b = parse_to_hash("var x = false;");
+    assert_ne!(hash_a, hash_b);
+}
+
 #[test]
 fn structural_hash_different_shape() {
     let hash_a = parse_to_hash("1 + 2");
diff --git a/crates/oxide_kernel/src/code_forge.rs b/crates/oxide_kernel/src/code_forge.rs
index 9d7bdf2..61b4599 100644
--- a/crates/oxide_kernel/src/code_forge.rs
+++ b/crates/oxide_kernel/src/code_forge.rs
@@ -61,7 +61,7 @@ mod tests {
         let a1 = Allocator::default();
         let a2 = Allocator::default();
         let p1 = oxide_parser::parse(&a1, "var x = 1; var y = 2;").expect("parse failed");
-        let p2 = oxide_parser::parse(&a2, "var a = 3; var b = 4;").expect("parse failed");
+        let p2 = oxide_parser::parse(&a2, "var a = 1; var b = 2;").expect("parse failed");
         assert_eq!(structural_hash(&p1), structural_hash(&p2));
     }