diff --git a/ocpi.location.v22.ts b/ocpi.location.v22.ts
index 331611e..9a58427 100644
--- a/ocpi.location.v22.ts
+++ b/ocpi.location.v22.ts
@@ -206,7 +206,7 @@ const EnergySource = z.object({
 const EnvironmentalImpactCategory = z.enum(["NUCLEAR_WASTE", "CARBON_DIOXIDE"]);
 
 const EnvironmentalImpact = z.object({
-  source: EnvironmentalImpactCategory,
+  category: EnvironmentalImpactCategory,
   amount: z.number(),
 });
 
diff --git a/ocpi.location.v221.ts b/ocpi.location.v221.ts
index aaa0355..d026cab 100644
--- a/ocpi.location.v221.ts
+++ b/ocpi.location.v221.ts
@@ -226,7 +226,7 @@ const EnergySource = z.object({
 const EnvironmentalImpactCategory = z.enum(["NUCLEAR_WASTE", "CARBON_DIOXIDE"]);
 
 const EnvironmentalImpact = z.object({
-  source: EnvironmentalImpactCategory,
+  category: EnvironmentalImpactCategory,
   amount: z.number(),
 });