diff --git a/src/psyclone/psyir/backend/fortran.py b/src/psyclone/psyir/backend/fortran.py
index 3a1514131d..34a705588d 100644
--- a/src/psyclone/psyir/backend/fortran.py
+++ b/src/psyclone/psyir/backend/fortran.py
@@ -122,6 +122,8 @@ def gen_datatype(datatype, name):
     '''
     if isinstance(datatype, DataTypeSymbol):
         # Symbol is of derived type
+        if datatype.is_class:
+            return f"class({datatype.name})"
         return f"type({datatype.name})"
 
     if (isinstance(datatype, ArrayType) and