diff --git a/backend/src/graphql/resolver/GdtResolver.ts b/backend/src/graphql/resolver/GdtResolver.ts
index f440efd3a..12e366f99 100644
--- a/backend/src/graphql/resolver/GdtResolver.ts
+++ b/backend/src/graphql/resolver/GdtResolver.ts
@@ -39,7 +39,7 @@ export class GdtResolver {
   }
 
   @Authorized([RIGHTS.GDT_BALANCE])
-  @Query(() => Int, { nullable: true })
+  @Query(() => Float, { nullable: true })
   async gdtBalance(@Ctx() context: Context): Promise<number | null> {
     const user = getUser(context)
     try {