diff --git a/generators/spring-boot/generator.js b/generators/spring-boot/generator.js
index 67ed7124b..0a2bd6b1e 100644
--- a/generators/spring-boot/generator.js
+++ b/generators/spring-boot/generator.js
@@ -277,7 +277,7 @@ export default class extends BaseApplicationGenerator {
             },
             prepareEntityForKotlin({ entity }) {
                 const { primaryKey } = entity;
-                if (primaryKey) {
+                if (primaryKey && primaryKey.name === 'id') {
                     // Kotlin does not support string ids specifications.
                     primaryKey.javaBuildSpecification = 'buildRangeSpecification';
                     for (const field of primaryKey.fields) {