diff --git a/src/core/operations/HaversineDistance.mjs b/src/core/operations/HaversineDistance.mjs
index 1d0d25e0..680bff4d 100644
--- a/src/core/operations/HaversineDistance.mjs
+++ b/src/core/operations/HaversineDistance.mjs
@@ -41,8 +41,8 @@ class HaversineDistance extends Operation {
 
         const lat1 = parseFloat(values[1]);
         const lng1 = parseFloat(values[3]);
-        const lat2 = parseFloat(values[6]);
-        const lng2 = parseFloat(values[8]);
+        const lat2 = parseFloat(values[5]);
+        const lng2 = parseFloat(values[7]);
 
         const TO_RAD = Math.PI / 180;
         const dLat = (lat2-lat1) * TO_RAD;
diff --git a/tests/operations/tests/HaversineDistance.mjs b/tests/operations/tests/HaversineDistance.mjs
index 94fc7289..81bbf56e 100644
--- a/tests/operations/tests/HaversineDistance.mjs
+++ b/tests/operations/tests/HaversineDistance.mjs
@@ -11,7 +11,18 @@ TestRegister.addTests([
     {
         name: "Haversine distance",
         input: "51.487263,-0.124323, 38.9517,-77.1467",
-        expectedOutput: "5619355.701829259",
+        expectedOutput: "5902542.836307819",
+        recipeConfig: [
+            {
+                "op": "Haversine distance",
+                "args": []
+            }
+        ],
+    },
+    {
+        name: "Haversine distance, zero distance",
+        input: "51.487263,-0.124323, 51.487263,-0.124323",
+        expectedOutput: "0",
         recipeConfig: [
             {
                 "op": "Haversine distance",