diff --git a/gen/schemas/hoc.json b/gen/schemas/hoc.json
index 96afec8..7645cc0 100644
--- a/gen/schemas/hoc.json
+++ b/gen/schemas/hoc.json
@@ -178,7 +178,7 @@
         "l",
         "kg",
         "kWh",
-        "mJ"
+        "MJ"
       ]
     },
     "Feedstock": {
diff --git a/gen/schemas/toc.json b/gen/schemas/toc.json
index 6e54090..78cc4a3 100644
--- a/gen/schemas/toc.json
+++ b/gen/schemas/toc.json
@@ -189,7 +189,7 @@
         "l",
         "kg",
         "kWh",
-        "mJ"
+        "MJ"
       ]
     },
     "Feedstock": {
diff --git a/gen/src/lib.rs b/gen/src/lib.rs
index e458bb5..36d3de1 100644
--- a/gen/src/lib.rs
+++ b/gen/src/lib.rs
@@ -355,6 +355,7 @@ pub enum EnergyConsumptionUnit {
     L,
     Kg,
     KWh,
+    #[serde(rename = "MJ")]
     MJ,
 }
 
diff --git a/gen/tests/tests.rs b/gen/tests/tests.rs
index c2eadd6..1487a7b 100644
--- a/gen/tests/tests.rs
+++ b/gen/tests/tests.rs
@@ -127,3 +127,18 @@ fn test_ship_foot_deser() {
     let ship_foot: ShipmentFootprint = serde_json::from_str(json).unwrap();
     assert_eq!(ship_foot, expected)
 }
+
+#[test]
+fn test_energyconsumptionunit_deser() {
+    use EnergyConsumptionUnit::*;
+    let test_vectors = vec![
+        ("\"l\"", L),
+        ("\"kg\"", Kg),
+        ("\"kWh\"", KWh),
+        ("\"MJ\"", MJ),
+    ];
+
+    for (expect, input) in &test_vectors {
+        assert_eq!(expect, &serde_json::to_string(input).unwrap());
+    }
+}