diff --git a/rsrc/schemas/monsters.xsd b/rsrc/schemas/monsters.xsd
index 2a75ef48..01c47616 100644
--- a/rsrc/schemas/monsters.xsd
+++ b/rsrc/schemas/monsters.xsd
@@ -37,6 +37,14 @@
 			<xs:enumeration value="skeletal"/>
 		</xs:restriction>
 	</xs:simpleType>
+	<xs:simpleType name="monsterAttitude">
+		<xs:restriction base="xs:token">
+			<xs:enumeration value="docile"/>
+			<xs:enumeration value="friendly"/>
+			<xs:enumeration value="hostile-a"/>
+			<xs:enumeration value="hostile-b"/>
+		</xs:restriction>
+	</xs:simpleType>
 	<xs:simpleType name="permille">
 		<xs:restriction base="xs:decimal">
 			<xs:fractionDigits value="1"/>
@@ -346,7 +354,7 @@
 				<xs:element name="onsight" minOccurs="0" type="xs:integer"/>
 				<xs:element name="voice" minOccurs="0" type="xs:integer"/>
 				<xs:element name="summon" minOccurs="0" type="xs:integer"/>
-				<xs:element name="attitude" type="xs:integer"/>
+				<xs:element name="attitude" type="monsterAttitude"/>
 				<xs:element name="immunity">
 					<xs:complexType>
 						<xs:all>
diff --git a/rsrc/schemas/scenario.xsd b/rsrc/schemas/scenario.xsd
index bfa04887..fff9c513 100644
--- a/rsrc/schemas/scenario.xsd
+++ b/rsrc/schemas/scenario.xsd
@@ -355,7 +355,13 @@
 					<xs:complexType>
 						<xs:simpleContent>
 							<xs:extension base="xs:string">
-								<xs:attribute name="id" type="xs:integer" use="required"/>
+								<xs:attribute name="id" use="required">
+									<xs:simpleType>
+										<xs:restriction base="xs:integer">
+											<xs:minInclusive value="100"/>
+										</xs:restriction>
+									</xs:simpleType>
+								</xs:attribute>
 							</xs:extension>
 						</xs:simpleContent>
 					</xs:complexType>
diff --git a/rsrc/schemas/town.xsd b/rsrc/schemas/town.xsd
index 4d2cad94..83886874 100644
--- a/rsrc/schemas/town.xsd
+++ b/rsrc/schemas/town.xsd
@@ -14,6 +14,14 @@
 			<xs:enumeration value="w"/>
 		</xs:restriction>
 	</xs:simpleType>
+	<xs:simpleType name="monsterAttitude">
+		<xs:restriction base="xs:token">
+			<xs:enumeration value="docile"/>
+			<xs:enumeration value="friendly"/>
+			<xs:enumeration value="hostile-a"/>
+			<xs:enumeration value="hostile-b"/>
+		</xs:restriction>
+	</xs:simpleType>
 	<xs:attributeGroup name="rect">
 		<xs:attribute name="top" use="required" type="xs:integer"/>
 		<xs:attribute name="left" use="required" type="xs:integer"/>
@@ -156,7 +164,7 @@
 						<xs:complexType>
 							<xs:all>
 								<xs:element name="type" type="xs:integer"/>
-								<xs:element name="attitude" type="xs:integer"/>
+								<xs:element name="attitude" type="monsterAttitude"/>
 								<xs:element name="mobility" type="xs:integer"/>
 								<xs:element name="sdf" minOccurs="0">
 									<xs:complexType>
diff --git a/src/scenedit/scen.fileio.cpp b/src/scenedit/scen.fileio.cpp
index 9a6c1941..a0ffd619 100644
--- a/src/scenedit/scen.fileio.cpp
+++ b/src/scenedit/scen.fileio.cpp
@@ -347,7 +347,7 @@ void writeScenarioToXml(ticpp::Printer&& data, cScenario& scenario) {
 	for(int i = 0; i < scenario.snd_names.size(); i++) {
 		if(scenario.snd_names[i].empty()) continue;
 		data.OpenElement("sound");
-		data.PushAttribute("id", i);
+		data.PushAttribute("id", i + 100);
 		data.PushText(scenario.snd_names[i]);
 		data.CloseElement("sound");
 	}
diff --git a/src/tools/fileio_scen.cpp b/src/tools/fileio_scen.cpp
index 62335ce9..0a8dac33 100644
--- a/src/tools/fileio_scen.cpp
+++ b/src/tools/fileio_scen.cpp
@@ -821,6 +821,9 @@ void readScenarioFromXml(ticpp::Document&& data, cScenario& scenario) {
 					edit->GetText(&scenario.last_town_edited);
 				} else if(type == "sound") {
 					edit->GetAttribute("id", &sndnum);
+					if(sndnum < 100)
+						throw xBadVal(type, "id", std::to_string(sndnum), edit->Row(), edit->Column(), fname);
+					sndnum -= 100;
 					if(sndnum >= scenario.snd_names.size())
 						scenario.snd_names.resize(sndnum + 1);
 					edit->GetText(&scenario.snd_names[sndnum], false);