diff --git a/modules/mol/alg/doc/molck.rst b/modules/mol/alg/doc/molck.rst
index 56f0fb6d7c49079951cd62d568eb39d6b3225905..fa5817d7cc12a181b2097bcaae1e2bdef1043739 100644
--- a/modules/mol/alg/doc/molck.rst
+++ b/modules/mol/alg/doc/molck.rst
@@ -184,7 +184,7 @@ API
 
   .. attribute:: assign_elem
 
-    Assigns elements as defined in the respective entries of the coupound 
+    Assigns elements as defined in the respective entries of the compound 
     library (provided at Molck call). For unknown atoms (see definition in
     :attr:`rm_unk_atoms`), the element is set to an empty string.
     To avoid empty strings as elements, this property should only be applied