diff --git a/src/main/java/ca/rttv/chatcalc/ChatCalc.java b/src/main/java/ca/rttv/chatcalc/ChatCalc.java
index 3d1aec0..bcbbda0 100644
--- a/src/main/java/ca/rttv/chatcalc/ChatCalc.java
+++ b/src/main/java/ca/rttv/chatcalc/ChatCalc.java
@@ -25,6 +25,9 @@ public static boolean tryParse(TextFieldWidget field) {
         int cursor = field.getCursor();
         String text = ChatHelper.getWord(originalText, cursor);
         String[] split = text.split("=");
+        if (split.length == 0) {
+            return false;
+        }
         if (split.length == 2) {
             if (Config.JSON.has(split[0])) {
                 Config.JSON.addProperty(split[0], split[1]);