diff --git a/plugins/optim/src/numeric/ibex_LinearizerCombo.cpp b/src/numeric/ibex_LinearizerCombo.cpp
similarity index 100%
rename from plugins/optim/src/numeric/ibex_LinearizerCombo.cpp
rename to src/numeric/ibex_LinearizerCombo.cpp
diff --git a/plugins/optim/src/numeric/ibex_LinearizerCombo.h b/src/numeric/ibex_LinearizerCombo.h
similarity index 100%
rename from plugins/optim/src/numeric/ibex_LinearizerCombo.h
rename to src/numeric/ibex_LinearizerCombo.h