diff --git a/app/main.py b/app/main.py
index 3a14c9b..20b774c 100644
--- a/app/main.py
+++ b/app/main.py
@@ -217,7 +217,7 @@ class QueryColumnPointListResponse(BaseModel):
 @app.post('/query/dataset/{dataset}/s/{scale}/values_array', response_model=QueryColumnPointListResponse, tags=["query"])
 async def query_values_array(dataset: DataSetName, scale: int, locs : ColumnPointList):
     """Return segment IDs at given locations.
-       One 
+       Note: This function returns float(s). For segments, use values_array_string_response.
     """
 
     # Get a Nx3 array of points
diff --git a/app/query.py b/app/query.py
index 6835d4d..daf4a36 100644
--- a/app/query.py
+++ b/app/query.py
@@ -32,7 +32,11 @@ def query_points(dataset, scale, locs):
     query_points[bad_points] = np.NaN
     if bad_points.all():
         # No valid points. The binning code will otherwise fail.
-        field = np.full((query_points.shape[0], info["width"]), np.NaN, dtype=info["dtype"])
+        error_value = np.NaN
+        if np.issubdtype(np.dtype(info["dtype"]), np.integer):
+            # Return 0 for integers [otherwise, np.NaN maps to MAX_VALUE
+            error_value = 0
+        field = np.full((query_points.shape[0], info["width"]), error_value, dtype=info["dtype"])
     else:
         field = process.get_multiple_ids(query_points, n5,
                                         max_workers=config.MaxWorkers,