diff --git a/FourmiCrawler/spider.py b/FourmiCrawler/spider.py
index d1b99a7..60f7363 100644
--- a/FourmiCrawler/spider.py
+++ b/FourmiCrawler/spider.py
@@ -35,14 +35,14 @@ class FourmiSpider(Spider):
                 return source.parse(response)
         return None
 
-    def get_synonym_requests(self, compound):
+    def get_synonym_requests(self, compound, force=False):
         """
         A function that generates new Scrapy Request for each source given a new synonym of a compound.
         :param compound: A compound name
         :return: A list of Scrapy Request objects
         """
         requests = []
-        if compound not in self.synonyms:
+        if force or compound not in self.synonyms:
             self.synonyms.add(compound)
             for parser in self._sources:
                 parser_requests = parser.new_compound_request(compound)
@@ -57,7 +57,7 @@ class FourmiSpider(Spider):
         """
         requests = []
         for synonym in self.synonyms:
-            requests.extend(self.get_synonym_requests(synonym))
+            requests.extend(self.get_synonym_requests(synonym, force=True))
         return requests
 
     def add_sources(self, sources):
diff --git a/tests/test_spider.py b/tests/test_spider.py
index 66878eb..89d6cfc 100644
--- a/tests/test_spider.py
+++ b/tests/test_spider.py
@@ -43,7 +43,10 @@ class TestFoumiSpider(unittest.TestCase):
 
         src2 = ChemSpider()
         self.spi.add_source(src2)
-        self.assertIsNotNone(self.spi.start_requests())
+        requests = self.spi.start_requests()
+        self.assertGreater(len(requests), 0)
+        self.assertIsInstance(requests[0], Request)
+
 
     def test_synonym_requests(self):
         # A test for the synonym request function