diff --git a/packages/sdk-codegen/src/kotlin.gen.spec.ts b/packages/sdk-codegen/src/kotlin.gen.spec.ts
index ffff1acd2..4f890ecb1 100644
--- a/packages/sdk-codegen/src/kotlin.gen.spec.ts
+++ b/packages/sdk-codegen/src/kotlin.gen.spec.ts
@@ -88,11 +88,9 @@ enum class PermissionType : Serializable {
  */
 data class HyphenType (
     var project_name: String? = null,
-    @get:JsonProperty("project-digest")
-    @param:JsonProperty("project-digest")
+    @SerializedName("project-digest")
     var project_digest: String? = null,
-    @get:JsonProperty("computation time")
-    @param:JsonProperty("computation time")
+    @SerializedName("computation time")
     var computation_time: Float? = null
 ) : Serializable`
       expect(actual).toEqual(expected)
diff --git a/packages/sdk-codegen/src/kotlin.gen.ts b/packages/sdk-codegen/src/kotlin.gen.ts
index 3ce7e64f7..d32ce6e65 100644
--- a/packages/sdk-codegen/src/kotlin.gen.ts
+++ b/packages/sdk-codegen/src/kotlin.gen.ts
@@ -155,7 +155,11 @@ import java.util.*
   declareProperty(indent: string, property: IProperty) {
     const optional = !property.required ? '? = null' : ''
     const type = this.typeMap(property.type)
-    const result = `${indent}var ${property.name}: ${type.name}${optional}`
+    // handle property names with special characters
+    const attr = property.hasSpecialNeeds
+      ? `${indent}@SerializedName("${property.jsonName}")\n`
+      : ''
+    const result = `${attr}${indent}var ${property.name}: ${type.name}${optional}`
     return result
   }