diff --git a/flatisfy/tests.py b/flatisfy/tests.py
index 1b7e34c..b74e3d9 100644
--- a/flatisfy/tests.py
+++ b/flatisfy/tests.py
@@ -114,6 +114,15 @@ class TestTexts(unittest.TestCase):
             tools.normalize_string("avec   ascenseur")
         )
 
+    def test_whitespace_trim(self):
+        """
+        Checks that trailing and beginning whitespaces are trimmed.
+        """
+        self.assertEqual(
+            "rennes 35000",
+            tools.normalize_string("  Rennes 35000 ")
+        )
+
     def test_accents(self):
         """
         Checks accents are replaced.
diff --git a/flatisfy/tools.py b/flatisfy/tools.py
index 59cc8eb..3c500cb 100644
--- a/flatisfy/tools.py
+++ b/flatisfy/tools.py
@@ -225,6 +225,9 @@ def normalize_string(string, lowercase=True, convert_arabic_numerals=True):
     # Collapse multiple spaces, replace tabulations and newlines by space
     string = re.sub(r"\s+", " ", string)
 
+    # Trim whitespaces
+    string = string.strip()
+
     return string