diff --git a/library/terrain_library_merger_pcm.cpp b/library/terrain_library_merger_pcm.cpp
index 48ae09b..c5f2219 100644
--- a/library/terrain_library_merger_pcm.cpp
+++ b/library/terrain_library_merger_pcm.cpp
@@ -83,6 +83,31 @@ void TerrainLibraryMergerPCM::_material_cache_get_key(Ref<TerrainChunk> chunk) {
 		}
 	}
 
+	uint8_t *liquid_ch = chunk->channel_get(TerrainChunkDefault::DEFAULT_CHANNEL_LIQUID_TYPE);
+
+	if (liquid_ch) {
+		for (uint32_t i = 0; i < size; ++i) {
+			uint8_t v = liquid_ch[i];
+
+			if (v == 0) {
+				continue;
+			}
+
+			int ssize = surfaces.size();
+			bool found = false;
+			for (uint8_t j = 0; j < ssize; ++j) {
+				if (surfaces[j] == v) {
+					found = true;
+					break;
+				}
+			}
+
+			if (!found) {
+				surfaces.push_back(v);
+			}
+		}
+	}
+
 	if (surfaces.size() == 0) {
 		chunk->material_cache_key_set(0);
 		chunk->material_cache_key_has_set(false);
@@ -207,31 +232,31 @@ void TerrainLibraryMergerPCM::_material_cache_unref(const int key) {
 void TerrainLibraryMergerPCM::_prop_material_cache_get_key(Ref<TerrainChunk> chunk) {
 	Vector<uint64_t> props;
 
-/*
-#ifdef PROPS_PRESENT
-	for (int i = 0; i < chunk->prop_get_count(); ++i) {
-		Ref<PropData> prop = chunk->prop_get(i);
+	/*
+	#ifdef PROPS_PRESENT
+		for (int i = 0; i < chunk->prop_get_count(); ++i) {
+			Ref<PropData> prop = chunk->prop_get(i);
 
-		ERR_CONTINUE(!prop.is_valid());
+			ERR_CONTINUE(!prop.is_valid());
 
-		//get pointer's value as uint64
-		uint64_t v = make_uint64_t<PropData *>(*prop);
+			//get pointer's value as uint64
+			uint64_t v = make_uint64_t<PropData *>(*prop);
 
-		int psize = props.size();
-		bool found = false;
-		for (int j = 0; j < psize; ++j) {
-			if (props[j] == v) {
-				found = true;
-				break;
+			int psize = props.size();
+			bool found = false;
+			for (int j = 0; j < psize; ++j) {
+				if (props[j] == v) {
+					found = true;
+					break;
+				}
+			}
+
+			if (!found) {
+				props.push_back(v);
 			}
 		}
-
-		if (!found) {
-			props.push_back(v);
-		}
-	}
-#endif
-*/
+	#endif
+	*/
 
 #if MESH_DATA_RESOURCE_PRESENT
 	for (int i = 0; i < chunk->mesh_data_resource_get_count(); ++i) {
@@ -316,17 +341,17 @@ void TerrainLibraryMergerPCM::_prop_material_cache_get_key(Ref<TerrainChunk> chu
 		cache->material_add(nm);
 	}
 
-/*
-#ifdef PROPS_PRESENT
-	for (int i = 0; i < chunk->prop_get_count(); ++i) {
-		Ref<PropData> prop = chunk->prop_get(i);
+	/*
+	#ifdef PROPS_PRESENT
+		for (int i = 0; i < chunk->prop_get_count(); ++i) {
+			Ref<PropData> prop = chunk->prop_get(i);
 
-		ERR_CONTINUE(!prop.is_valid());
+			ERR_CONTINUE(!prop.is_valid());
 
-		cache->prop_add_textures(prop);
-	}
-#endif
-*/
+			cache->prop_add_textures(prop);
+		}
+	#endif
+	*/
 
 #if MESH_DATA_RESOURCE_PRESENT
 	for (int i = 0; i < chunk->mesh_data_resource_get_count(); ++i) {