diff --git a/abaplint.jsonc b/abaplint.jsonc
index 9a35495d..641acde9 100644
--- a/abaplint.jsonc
+++ b/abaplint.jsonc
@@ -257,6 +257,61 @@
     "use_new": true,
     "when_others_last": true,
     "whitespace_end": true,
-    "xml_consistency": true
+    "xml_consistency": true,
+ "forbidden_void_type": {
+      "check": [
+        "^boole_d$",
+        "^char10$",
+        "^char12$",
+        "^char2$",
+        "^char20$",
+        "^char30$",
+        "^char4$",
+        "^char50$",
+        "^char70$",
+        "^cl_abap_syst",
+        "^cl_aff_",
+        "^cl_aucv_test_runner_abstract$",
+        "^cl_aucv_test_runner_standard$",
+        "^cl_aunit_assert$",
+        "^cl_axt_dbtable$",
+        "^cl_blue_wb_utility$",
+        "^cl_oo_source$",
+        "^cl_saunit_internal_result$",
+        "^cl_srvd_wb_object_data$",
+        "^cl_wb_object_operator_factory$",
+        "^cl_wer_const$",
+        "^cl_xco_",
+        "^cx_aff_",
+        "^cx_wb_object_operation_error$",
+        "^cx_xco_",
+        "^flag$",
+        "^i18_a_langiso2$",
+        "^if_adt_lock_handle$",
+        "^if_aff_",
+        "^if_satc_ci_variant_access$",
+        "^if_saunit_internal_result$",
+        "^if_saunit_internal_result_type$",
+        "^if_srvd_types$",
+        "^if_wb_adt_plugin_resource_co$",
+        "^if_wb_object_data_selection_co$",
+        "^if_wb_object_operator$",
+        "^if_xco_",
+        "^int4$",
+        "^numc2$",
+        "^sabp_t_tadir_keys$",
+        "^sap_bool$",
+        "^srcsystem$",
+        "^stringtab$",
+        "^sychar01$",
+        "^sychar10$",
+        "^sychar70$",
+        "^sydatum$",
+        "^sylangu$",
+        "^syst_title$",
+        "^syuzeit$",
+        "^xubname$"
+      ]
+    },
   }
 }