diff --git a/pcbnew/router/pns_kicad_iface.cpp b/pcbnew/router/pns_kicad_iface.cpp
index 3e39482ed4..a8b65c9cf7 100644
--- a/pcbnew/router/pns_kicad_iface.cpp
+++ b/pcbnew/router/pns_kicad_iface.cpp
@@ -1363,7 +1363,7 @@ void PNS_KICAD_IFACE_BASE::SyncWorld( PNS::NODE *aWorld )
     m_ruleResolver = new PNS_PCBNEW_RULE_RESOLVER( m_board, this );
 
     aWorld->SetRuleResolver( m_ruleResolver );
-    aWorld->SetMaxClearance( 4 * worstClearance );
+    aWorld->SetMaxClearance( 1.5 * worstClearance );
 }