diff --git a/alib2algo/src/automaton/convert/Convert.cpp b/alib2algo/src/automaton/convert/Convert.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..0b47215c76d91fddf86b22afde2e1413e05cd220
--- /dev/null
+++ b/alib2algo/src/automaton/convert/Convert.cpp
@@ -0,0 +1,8 @@
+#include "ToGrammar.cxx"
+#include "ToGrammarLeftRG.cxx"
+#include "ToGrammarRightRG.cxx"
+#include "ToPostfixPushdownAutomaton.cxx"
+#include "ToRegExp.cxx"
+#include "ToRegExpAlgebraic.cxx"
+#include "ToRegExpKleene.cxx"
+#include "ToRegExpStateElimination.cxx"
diff --git a/alib2algo/src/automaton/convert/ToGrammar.cpp b/alib2algo/src/automaton/convert/ToGrammar.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToGrammar.cpp
rename to alib2algo/src/automaton/convert/ToGrammar.cxx
diff --git a/alib2algo/src/automaton/convert/ToGrammarLeftRG.cpp b/alib2algo/src/automaton/convert/ToGrammarLeftRG.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToGrammarLeftRG.cpp
rename to alib2algo/src/automaton/convert/ToGrammarLeftRG.cxx
diff --git a/alib2algo/src/automaton/convert/ToGrammarRightRG.cpp b/alib2algo/src/automaton/convert/ToGrammarRightRG.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToGrammarRightRG.cpp
rename to alib2algo/src/automaton/convert/ToGrammarRightRG.cxx
diff --git a/alib2algo/src/automaton/convert/ToPostfixPushdownAutomaton.cpp b/alib2algo/src/automaton/convert/ToPostfixPushdownAutomaton.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToPostfixPushdownAutomaton.cpp
rename to alib2algo/src/automaton/convert/ToPostfixPushdownAutomaton.cxx
diff --git a/alib2algo/src/automaton/convert/ToRegExp.cpp b/alib2algo/src/automaton/convert/ToRegExp.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToRegExp.cpp
rename to alib2algo/src/automaton/convert/ToRegExp.cxx
diff --git a/alib2algo/src/automaton/convert/ToRegExpAlgebraic.cpp b/alib2algo/src/automaton/convert/ToRegExpAlgebraic.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToRegExpAlgebraic.cpp
rename to alib2algo/src/automaton/convert/ToRegExpAlgebraic.cxx
diff --git a/alib2algo/src/automaton/convert/ToRegExpKleene.cpp b/alib2algo/src/automaton/convert/ToRegExpKleene.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToRegExpKleene.cpp
rename to alib2algo/src/automaton/convert/ToRegExpKleene.cxx
diff --git a/alib2algo/src/automaton/convert/ToRegExpStateElimination.cpp b/alib2algo/src/automaton/convert/ToRegExpStateElimination.cxx
similarity index 100%
rename from alib2algo/src/automaton/convert/ToRegExpStateElimination.cpp
rename to alib2algo/src/automaton/convert/ToRegExpStateElimination.cxx