diff --git a/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5/rule_5_3.json b/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5/rule_5_3.json
index 6763d3dfb..ecf5e4d49 100644
--- a/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5/rule_5_3.json
+++ b/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5/rule_5_3.json
@@ -54,7 +54,7 @@
                                                 "surfaces": [
                                                     {
                                                         "id": "Surface 1",
-                                                        "adjacent_to": "INTERIOR",
+                                                        "adjacent_to": "EXTERIOR",
                                                         "tilt": 90,
                                                         "construction": {
                                                             "id": "Construction 1"
diff --git a/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5_envelope_tcd_master.json b/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5_envelope_tcd_master.json
index 7218ac454..6e909afb0 100644
--- a/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5_envelope_tcd_master.json
+++ b/rct229/ruletest_engine/ruletest_jsons/ashrae9012019/section5_envelope_tcd_master.json
@@ -214,7 +214,7 @@
                                                 "surfaces": [
                                                     {
                                                         "id": "Surface 1",
-                                                        "adjacent_to": "INTERIOR",
+                                                        "adjacent_to": "EXTERIOR",
                                                         "tilt": 90,
                                                         "construction": {
                                                             "id": "Construction 1"