diff --git a/docs/source_description/source_discription.rst b/docs/source_description/source_discription.rst
index 807cc359..13246461 100644
--- a/docs/source_description/source_discription.rst
+++ b/docs/source_description/source_discription.rst
@@ -154,7 +154,7 @@ Moment Tensor Source Description
 
 **possible values** : [YAML Node]
 
-**Description** : Definition of Ricker source :ref:`ricker_source_description
+**Description** : Definition of Ricker source :ref:`ricker_source_description`
 
 **Parameter Name** : ``sources.moment_tensor.External`` [optional]
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~