diff --git a/emission/analysis/result/metrics/simple_metrics.py b/emission/analysis/result/metrics/simple_metrics.py
index 6e8a33b34..53b8304d6 100644
--- a/emission/analysis/result/metrics/simple_metrics.py
+++ b/emission/analysis/result/metrics/simple_metrics.py
@@ -27,13 +27,13 @@ def get_count(mode_section_grouped_df):
 def get_distance(mode_section_grouped_df):
     ret_dict = {}
     for (mode, mode_section_df) in mode_section_grouped_df:
-        ret_dict[mode] = mode_section_df.distance.sum()
+        ret_dict[mode] = float(mode_section_df.distance.sum())
     return ret_dict
 
 def get_duration(mode_section_grouped_df):
     ret_dict = {}
     for (mode, mode_section_df) in mode_section_grouped_df:
-        ret_dict[mode] = mode_section_df.duration.sum()
+        ret_dict[mode] = float(mode_section_df.duration.sum())
     return ret_dict
 
 def get_median_speed(mode_section_grouped_df):
@@ -45,5 +45,5 @@ def get_median_speed(mode_section_grouped_df):
         if np.isnan(mode_median):
             logging.debug("still found nan for mode %s, skipping")
         else:
-            ret_dict[mode] = mode_median
+            ret_dict[mode] = float(mode_median)
     return ret_dict
diff --git a/emission/net/ext_service/geocoder/nominatim.py b/emission/net/ext_service/geocoder/nominatim.py
index 901f321c5..30ef19ce3 100644
--- a/emission/net/ext_service/geocoder/nominatim.py
+++ b/emission/net/ext_service/geocoder/nominatim.py
@@ -40,6 +40,7 @@ def make_url_geo(cls, address):
         query_url = NOMINATIM_QUERY_URL + "/search?"
         encoded_params = urllib.parse.urlencode(params)
         url = query_url + encoded_params
+        logging.debug("For geocoding, using URL %s" % url)
         return url
 
     @classmethod
@@ -72,6 +73,7 @@ def make_url_reverse(cls, lat, lon):
         query_url = NOMINATIM_QUERY_URL + "/reverse?"
         encoded_params = urllib.parse.urlencode(params)
         url = query_url + encoded_params
+        logging.debug("For reverse geocoding, using URL %s" % url)
         return url
 
     @classmethod