diff --git a/pcbnew/router/pns_line_placer.cpp b/pcbnew/router/pns_line_placer.cpp
index 9b13ca1522..6a327fe0e3 100644
--- a/pcbnew/router/pns_line_placer.cpp
+++ b/pcbnew/router/pns_line_placer.cpp
@@ -1365,7 +1365,9 @@ bool LINE_PLACER::FixRoute( const VECTOR2I& aP, ITEM* aEndItem, bool aForceFinis
             std::unique_ptr<ARC> ap = std::make_unique<ARC>( arc );
             lastItem = ap.get();
 
-            m_lastNode->Add( std::move( ap ) );
+            if( !m_lastNode->Add( std::move( ap ) ) )
+                lastItem = nullptr;
+
             lastArc  = arcIndex;
         }
     }
diff --git a/pcbnew/router/pns_node.cpp b/pcbnew/router/pns_node.cpp
index a9396927c2..8057a15dc9 100644
--- a/pcbnew/router/pns_node.cpp
+++ b/pcbnew/router/pns_node.cpp
@@ -662,10 +662,19 @@ void NODE::addArc( ARC* aArc )
 }
 
 
-void NODE::Add( std::unique_ptr< ARC > aArc )
+bool NODE::Add( std::unique_ptr< ARC > aArc, bool aAllowRedundant )
 {
+    const SHAPE_ARC& arc = aArc->CArc();
+
+    if( !aAllowRedundant && findRedundantArc( arc.GetP0(), arc.GetP1(), aArc->Layers(),
+                                              aArc->Net() ) )
+    {
+        return false;
+    }
+
     aArc->SetOwner( this );
     addArc( aArc.release() );
+    return true;
 }
 
 
diff --git a/pcbnew/router/pns_node.h b/pcbnew/router/pns_node.h
index 3b3dfb8d27..cc1ec654a7 100644
--- a/pcbnew/router/pns_node.h
+++ b/pcbnew/router/pns_node.h
@@ -257,7 +257,7 @@ public:
     bool Add( std::unique_ptr< SEGMENT > aSegment, bool aAllowRedundant = false );
     void Add( std::unique_ptr< SOLID >   aSolid );
     void Add( std::unique_ptr< VIA >     aVia );
-    void Add( std::unique_ptr< ARC >     aArc );
+    bool Add( std::unique_ptr< ARC >     aArc, bool aAllowRedundant = false );
 
     void Add( LINE& aLine, bool aAllowRedundant = false );