diff --git a/ford/graphmanager.py b/ford/graphmanager.py
index <HASH>..<HASH> 100644
--- a/ford/graphmanager.py
+++ b/ford/graphmanager.py
@@ -75,7 +75,7 @@ class GraphManager(object):
         ford.graphs.set_graphs_parentdir(parentdir)
 
     def register(self,obj):
-        if obj.meta['graph'] == 'true':
+        if obj.meta['graph'].lower() == 'true':
             ford.graphs.FortranGraph.data.register(obj,type(obj))
             self.graph_objs.append(obj)
Remove capitalization from graph option when checking whether a graph should be generated.