diff --git a/asterisk/agi.py b/asterisk/agi.py
index d1dc39a..aa0ba35 100644
--- a/asterisk/agi.py
+++ b/asterisk/agi.py
@@ -116,6 +116,8 @@ class AGI:
      """ provides double quotes to string, converts int/bool to string """
         if isinstance(string, int):
           string = str(string)
+        if isinstance(string, float):
+          string = str(string)
         return ''.join(['"', string.encode('ascii', 'ignore'), '"'])
 
     def _handle_sighup(self, signum, frame):