diff --git a/qelectrotech.pro b/qelectrotech.pro
index ce0ce47fd..a99029c9c 100644
--- a/qelectrotech.pro
+++ b/qelectrotech.pro
@@ -66,7 +66,7 @@ DEPENDPATH += .
 INCLUDEPATH += sources sources/editor sources/titleblock sources/ui sources/qetgraphicsitem sources/richtext sources/factory sources/properties sources/dvevent
 
 # Fichiers sources
-HEADERS += $$files(sources/*.h) $$files(sources/ui/*.h) $$files(sources/editor/*.h) $$files(sources/titleblock/*.h) $$files(sources/richtext/*.h) $$files(sources/qetgraphicsitem/*.h) $$files(sources/factory/*.cpp) \
+HEADERS += $$files(sources/*.h) $$files(sources/ui/*.h) $$files(sources/editor/*.h) $$files(sources/titleblock/*.h) $$files(sources/richtext/*.h) $$files(sources/qetgraphicsitem/*.h) $$files(sources/factory/*.h) \
            $$files(sources/properties/*.h) \
            $$files(sources/editor/ui/*.h) \
            $$files(sources/dvevent/*.h)
diff --git a/sources/qetgraphicsitem/conductor.cpp b/sources/qetgraphicsitem/conductor.cpp
index 195a836f9..942254d16 100644
--- a/sources/qetgraphicsitem/conductor.cpp
+++ b/sources/qetgraphicsitem/conductor.cpp
@@ -1441,36 +1441,6 @@ QSet<Conductor *> Conductor::relatedPotentialConductors(const bool all_diagram,
 	return(other_conductors);
 }
 
-/**
- * @brief Conductor::relatedPotentialTerminal
- * Return terminal at the same potential from the same
- * parent element of @t.
- * For folio report, return the terminal of linked other report.
- * For Terminal element, return the other terminal of terminal element.
- * @param t terminal to start search
- * @param all_diagram :if true return all related terminal,
- * false return only terminal in the same diagram of @t
- * @return
- */
-Terminal * Conductor::relatedPotentialTerminal (Terminal *t, const bool all_diagram) {
-	// If terminal parent element is a folio report.
-	if (all_diagram && t->parentElement()->linkType() & Element::AllReport) {
-		QList <Element *> elmt_list = t->parentElement()->linkedElements();
-		if (!elmt_list.isEmpty()) {
-			return (elmt_list.first()->terminals().first());
-		}
-	}
-	// If terminal parent element is a Terminal element.
-	if (t->parentElement() -> linkType() & Element::Terminale) {
-		QList <Terminal *> terminals = t->parentElement()->terminals();
-		terminals.removeAll(t);
-		if (!terminals.isEmpty()) return terminals.first();
-		else return nullptr;
-	}
-
-	return nullptr;
-}
-
 /**
  * @return l'editeur de schemas parent ou 0
  */
diff --git a/sources/qetgraphicsitem/conductor.h b/sources/qetgraphicsitem/conductor.h
index 4095f10a7..34cc3556c 100644
--- a/sources/qetgraphicsitem/conductor.h
+++ b/sources/qetgraphicsitem/conductor.h
@@ -179,7 +179,6 @@ class Conductor : public QObject, public QGraphicsPathItem {
 	static qreal conductor_bound(qreal, qreal, bool);
 	static Qt::Corner movementType(const QPointF &, const QPointF &);
 	static QPointF movePointIntoPolygon(const QPointF &, const QPainterPath &);
-	Terminal * relatedPotentialTerminal (Terminal *, const bool all_diagram = true);
 };
 
 Conductor * longuestConductorInPotential (Conductor *conductor, bool all_diagram = false);
diff --git a/sources/terminal.cpp b/sources/qetgraphicsitem/terminal.cpp
similarity index 93%
rename from sources/terminal.cpp
rename to sources/qetgraphicsitem/terminal.cpp
index a6e7deaab..63a4a7d43 100644
--- a/sources/terminal.cpp
+++ b/sources/qetgraphicsitem/terminal.cpp
@@ -549,3 +549,33 @@ Element *Terminal::parentElement() const {
 	return(parent_element_);
 }
 
+/**
+ * @brief Conductor::relatedPotentialTerminal
+ * Return terminal at the same potential from the same
+ * parent element of @t.
+ * For folio report, return the terminal of linked other report.
+ * For Terminal element, return the other terminal of terminal element.
+ * @param t terminal to start search
+ * @param all_diagram :if true return all related terminal,
+ * false return only terminal in the same diagram of @t
+ * @return
+ */
+Terminal * relatedPotentialTerminal (const Terminal *terminal, const bool all_diagram) {
+	// If terminal parent element is a folio report.
+	if (all_diagram && terminal -> parentElement() -> linkType() & Element::AllReport) {
+		QList <Element *> elmt_list = terminal -> parentElement() -> linkedElements();
+		if (!elmt_list.isEmpty()) {
+			return (elmt_list.first() -> terminals().first());
+		}
+	}
+	// If terminal parent element is a Terminal element.
+	else if (terminal -> parentElement() -> linkType() & Element::Terminale) {
+		QList <Terminal *> terminals = terminal -> parentElement() -> terminals();
+		terminals.removeAll(const_cast<Terminal *> (terminal));
+		if (!terminals.isEmpty())
+			return terminals.first();
+	}
+
+	return nullptr;
+}
+
diff --git a/sources/terminal.h b/sources/qetgraphicsitem/terminal.h
similarity index 98%
rename from sources/terminal.h
rename to sources/qetgraphicsitem/terminal.h
index e0c2209dc..c690b2426 100644
--- a/sources/terminal.h
+++ b/sources/qetgraphicsitem/terminal.h
@@ -160,4 +160,6 @@ inline QString Terminal::name() const {
 	return(name_terminal_);
 }
 
+Terminal * relatedPotentialTerminal (const Terminal *terminal, const bool all_diagram = true);
+
 #endif