diff --git a/tools/analysis.py b/tools/analysis.py
index 300d0972ff20c15e2d4396dd160b249da0d9eece..ea0d2f2946df8df5cdf26c3346b5bd55dd259053 100644
--- a/tools/analysis.py
+++ b/tools/analysis.py
@@ -22,6 +22,12 @@ class Analysis(VidjilJson):
         for clone in self.d['clones']:
             self.clones[clone['id']] = clone
 
+    def missing_clones(self, lw):
+        '''Return a set of the clones described in this .analysis but not present into the .vidjil'''
+        my_clones = set(self.clones.keys())
+        lw_clones = set([c.d['id'] for c in lw])
+        return my_clones.difference(lw_clones)
+
     def info_of_clone(self, w):
         if w.d['id'] in self.clones:
             return self.clones[w.d['id']]
diff --git a/tools/latex.py b/tools/latex.py
index 458d42438916115891067a0395136c81fdabb9b7..c664692cc5339f1c533da49b9ccc6deff88372b5 100644
--- a/tools/latex.py
+++ b/tools/latex.py
@@ -63,6 +63,10 @@ def main():
         if not out:
             print(r'\\')
 
+        if data_analysis:
+            for c in data_analysis.missing_clones(data):
+                print('%% !! %s' % c)
+
         print(r'  \hline')
 
 if  __name__ =='__main__':