diff --git a/components/esm4/loadaspc.cpp b/components/esm4/loadaspc.cpp
index 0cb3590404..d79df9d8ef 100644
--- a/components/esm4/loadaspc.cpp
+++ b/components/esm4/loadaspc.cpp
@@ -56,10 +56,16 @@ void ESM4::AcousticSpace::load(ESM4::Reader& reader)
             case ESM4::SUB_INAM:
                 reader.get(mIsInterior);
                 break;
-            case ESM4::SUB_WNAM: // usually 0 for FONV (maybe # of close Actors for Walla to trigger)
+            case ESM4::SUB_XTRI:
+                std::uint8_t isInterior;
+                reader.get(isInterior);
+                mIsInterior = isInterior;
+                break;
+            case ESM4::SUB_WNAM:
             {
-                std::uint32_t dummy;
-                reader.get(dummy);
+                // usually 0 for FONV (maybe # of close Actors for Walla to trigger) (4 bytes)
+                // Weather attenuation in FO4 (2 bytes)
+                reader.skipSubRecordData();
                 break;
             }
             case ESM4::SUB_BNAM: // TES5 reverb formid