diff --git a/src/engine/SpatialJoinAlgorithms.cpp b/src/engine/SpatialJoinAlgorithms.cpp
index faea3b85c5..07338e49c9 100644
--- a/src/engine/SpatialJoinAlgorithms.cpp
+++ b/src/engine/SpatialJoinAlgorithms.cpp
@@ -127,7 +127,7 @@ Id SpatialJoinAlgorithms::computeDist(RtreeEntry& geo1, RtreeEntry& geo2) {
 
   // use the already parsed geometries to calculate the distance
   if (useMidpointForAreas_ ||
-      geo1.geoPoint_.has_value() && geo2.geoPoint_.has_value()) {
+      (geo1.geoPoint_.has_value() && geo2.geoPoint_.has_value())) {
     return Id::makeFromDouble(ad_utility::detail::wktDistImpl(
         convertPoint(geo1), convertPoint(geo2)));
   } else {