diff --git a/redash/models/__init__.py b/redash/models/__init__.py
index f737cd11fa8..a3e594b7d34 100644
--- a/redash/models/__init__.py
+++ b/redash/models/__init__.py
@@ -819,7 +819,8 @@ def default_parameters_query_text(self):
 
     @property
     def parameters_dict(self):
-        return {p["name"]: p.get("value") for p in self.parameters}
+        # ignore the parameter if no default value is set
+        return {p["name"]: p.get("value") for p in self.parameters if p.get("value")}
 
     @property
     def parameterized(self):