diff --git a/docs/source/whatsnew/v0.3.1.txt b/docs/source/whatsnew/v0.3.1.txt
index c42e0d4..240303e 100644
--- a/docs/source/whatsnew/v0.3.1.txt
+++ b/docs/source/whatsnew/v0.3.1.txt
@@ -16,6 +16,8 @@ Enhancements
 Bug Fixes
 ~~~~~~~~~
 
+-  Symbols with non-alphanumeric characters fail
+   `GH38 <https://github.com/addisonlynch/iexfinance/issues/38>`__
 -  Some Stocks endpoints return incorrectly
    `GH34 <https://github.com/addisonlynch/iexfinance/issues/34>`__
 -  Repaired CodeCov code coverage
diff --git a/iexfinance/base.py b/iexfinance/base.py
index 76c393b..e9c03e8 100644
--- a/iexfinance/base.py
+++ b/iexfinance/base.py
@@ -102,7 +102,7 @@ def _execute_iex_query(self, url):
         """
         pause = self.pause
         for i in range(self.retry_count+1):
-            response = self.session.get(url=url)
+            response = self.session.get(url=url, params=self.params)
             if response.status_code == requests.codes.ok:
                 return self._validate_response(response)
             time.sleep(pause)
@@ -116,9 +116,7 @@ def _prepare_query(self):
         url: str
             A formatted URL
         """
-        params = "?" + "&".join(
-            "{}={}".format(*i) for i in self.params.items())
-        url = self._IEX_API_URL + self.url + params
+        url = self._IEX_API_URL + self.url
         return url
 
     def fetch(self):