diff --git a/__pycache__/research.cpython-38.pyc b/__pycache__/research.cpython-38.pyc
index afacca98aac9733bd63f19ac1325b5a92f644af1..ed2ca150e2e72ec77e82ae5798e6c587af0df0f5 100644
Binary files a/__pycache__/research.cpython-38.pyc and b/__pycache__/research.cpython-38.pyc differ
diff --git a/main.py b/main.py
index d05ef1fa470ffe229f7ce173cc13c89515d07ef2..c221b79dc4c63cc988b5a7041dc29cfc9f7d72f5 100644
--- a/main.py
+++ b/main.py
@@ -10,6 +10,6 @@ def tree_position(lat, lon):
     return {'lat':lat, 'lon':lon, 'ville':city, 'rue':main_street, 'début tronçon': begin, 'fin tronçon':end}
 
 if __name__=="__main__":
-    lat = 48.89525193
-    lon = 2.247122897
+    lat = 48.89394122
+    lon = 2.247959188
     print(tree_position(lat, lon))
\ No newline at end of file
diff --git a/research.py b/research.py
index fc827f6464bbe393bbfdf78aed0bfa1f78c70741..b605890007240ead947516bf3f9e2ad265b72b86 100644
--- a/research.py
+++ b/research.py
@@ -3,13 +3,13 @@ from math import sqrt
 
 def circular_research(lat, lon, main_street):
     street = requete_osm(lat, lon)['address']['road']
-    if not(street == main_street):
+    if not(street == main_street) and not(street == ''):
         return street
     step = 10**(-5)
     while step < 10**(-4):
         for i in range(8):
             street = check_position(lat, lon, step, main_street, i)
-            if not(street == main_street):
+            if not(street == main_street) and not(street == ''):
                 return street
         step += 10**(-5)
     return None
@@ -18,19 +18,43 @@ def check_position(lat, lon, step, main_street, i):
     street = ''
     step_diag = step/sqrt(2)
     if i == 0:
-        street = requete_osm(lat+step, lon)['address']['road']
+        try:
+            street = requete_osm(lat+step, lon)['address']['road']
+        except KeyError:
+            pass
     elif i == 1:
-        street = requete_osm(lat+step_diag, lon+step_diag)['address']['road']
+        try:
+            street = requete_osm(lat+step_diag, lon+step_diag)['address']['road']
+        except KeyError:
+            pass
     elif i == 2:
-        street = requete_osm(lat, lon+step)['address']['road']
+        try:
+            street = requete_osm(lat, lon+step)['address']['road']
+        except KeyError:
+            pass
     elif i == 3:
-        street = requete_osm(lat-step_diag, lon+step_diag)['address']['road']
+        try:
+            street = requete_osm(lat-step_diag, lon+step_diag)['address']['road']
+        except KeyError:
+            pass
     elif i == 4:
-        street = requete_osm(lat-step, lon)['address']['road']
+        try:
+            street = requete_osm(lat-step, lon)['address']['road']
+        except KeyError:
+            pass
     elif i == 5:
-        street = requete_osm(lat-step_diag, lon-step_diag)['address']['road']
+        try:
+            street = requete_osm(lat-step_diag, lon-step_diag)['address']['road']
+        except KeyError:
+            pass
     elif i == 6:
-        street = requete_osm(lat, lon-step)['address']['road']
+        try:
+            street = requete_osm(lat, lon-step)['address']['road']
+        except KeyError:
+            pass
     elif i == 7:
-        street = requete_osm(lat+step_diag, lon-step_diag)['address']['road']
+        try:
+            street = requete_osm(lat+step_diag, lon-step_diag)['address']['road']
+        except KeyError:
+            pass
     return street