diff --git a/package.json b/package.json
index b6167b9..8b511c3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
-  "name": "jsonata-ui-core",
-  "version": "1.7.2",
+  "name": "@samsquatch/jsonata-ui-core",
+  "version": "1.7.5",
   "description": "Core AST and serializers for jsonata-ui",
   "source": "src/index.ts",
   "main": "dist/index.js",
diff --git a/src/serializer.ts b/src/serializer.ts
index 546bdd9..8791eed 100644
--- a/src/serializer.ts
+++ b/src/serializer.ts
@@ -78,12 +78,12 @@ export default function serializer(node: AST): string {
       "}"
     );
   } else if (node.type === "condition") {
-    return (
-      serializer(node.condition) +
-      " ? " +
-      serializer(node.then) +
-      " : " +
-      serializer(node.else)
+    return (`${serializer(node.condition)} ? ${
+      serializer(node.then)}
+      ${node.else ? 
+        `: ${serializer(node.else)}` 
+        : ''
+      }`
     );
   } else if (node.type === "value") {
     if (node.value === null) return "null";
diff --git a/src/types.ts b/src/types.ts
index 242cead..4af25d4 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -131,7 +131,7 @@ export interface ConditionNode extends Node {
   type: "condition";
   condition: JsonataASTNode;
   then: JsonataASTNode;
-  else: JsonataASTNode;
+  else?: JsonataASTNode;
 }
 
 export interface LambdaNode extends Node {