diff --git a/Min_quadrilateral_2/doc_tex/Optimisation_ref/spec_oops.tex b/Min_quadrilateral_2/doc_tex/Optimisation_ref/spec_oops.tex
index 070aaf4aff9..2692eca7ee5 100644
--- a/Min_quadrilateral_2/doc_tex/Optimisation_ref/spec_oops.tex
+++ b/Min_quadrilateral_2/doc_tex/Optimisation_ref/spec_oops.tex
@@ -145,7 +145,7 @@
   \ccc{P} with 20 vertices and computes the minimum enclosing
   parallelogram of \ccc{P}.
 
-  \ccIncludeExampleCode{Optimisation_ref/minimum_enclosing_parallelogram_2.cpp}
+  \ccIncludeExampleCode{Min_quadrilateral/minimum_enclosing_parallelogram_2.cpp}
 
 \end{ccRefFunction}
 
@@ -214,7 +214,7 @@
   \ccc{P} with 20 vertices and computes the minimum enclosing
   strip of \ccc{P}.
 
-  \ccIncludeExampleCode{Optimisation_ref/minimum_enclosing_strip_2.cpp}
+  \ccIncludeExampleCode{Min_quadrilateral/minimum_enclosing_strip_2.cpp}
 
 \end{ccRefFunction}