diff --git a/3d-viewer/3d_rendering/raytracing/shapes3D/object_3d.h b/3d-viewer/3d_rendering/raytracing/shapes3D/object_3d.h
index a27baaf9df..c956c69a50 100644
--- a/3d-viewer/3d_rendering/raytracing/shapes3D/object_3d.h
+++ b/3d-viewer/3d_rendering/raytracing/shapes3D/object_3d.h
@@ -52,7 +52,7 @@ class OBJECT_3D
 public:
     explicit OBJECT_3D( OBJECT_3D_TYPE aObjType );
 
-    const void SetBoardItem( BOARD_ITEM* aBoardItem ) { m_boardItem = aBoardItem; }
+    void SetBoardItem( BOARD_ITEM* aBoardItem ) { m_boardItem = aBoardItem; }
     BOARD_ITEM* GetBoardItem() const { return m_boardItem; }
 
     void SetMaterial( const MATERIAL* aMaterial )
diff --git a/pcbnew/router/pns_item.cpp b/pcbnew/router/pns_item.cpp
index eab515ca36..ec5e93a4b2 100644
--- a/pcbnew/router/pns_item.cpp
+++ b/pcbnew/router/pns_item.cpp
@@ -33,7 +33,7 @@ namespace PNS {
 
 static void dumpObstacles( const PNS::NODE::OBSTACLES &obstacles )
 {
-    printf( "&&&& %lu obstacles: \n", obstacles.size() );
+    printf( "&&&& %zu obstacles: \n", obstacles.size() );
 
     for( const auto& obs : obstacles )
     {
diff --git a/utils/idftools/idf_outlines.cpp b/utils/idftools/idf_outlines.cpp
index ec7f65f76a..2dd4239026 100644
--- a/utils/idftools/idf_outlines.cpp
+++ b/utils/idftools/idf_outlines.cpp
@@ -1449,7 +1449,7 @@ bool BOARD_OUTLINE::DelOutline( size_t aIndex )
 }
 
 
-const std::list< IDF_OUTLINE* >*const BOARD_OUTLINE::GetOutlines( void )
+const std::list<IDF_OUTLINE*>* BOARD_OUTLINE::GetOutlines( void )
 {
     return &outlines;
 }
diff --git a/utils/idftools/idf_outlines.h b/utils/idftools/idf_outlines.h
index 00eecdd309..809f627230 100644
--- a/utils/idftools/idf_outlines.h
+++ b/utils/idftools/idf_outlines.h
@@ -182,7 +182,7 @@ public:
      * It is up to the user to respect the IDFv3 specification and avoid changes to this
      * list which are in violation of the specification.
      */
-    const std::list< IDF_OUTLINE* >*const GetOutlines( void );
+    const std::list<IDF_OUTLINE*>* GetOutlines( void );
 
     /**
      * @return the number of items in the internal outline list.
diff --git a/utils/idftools/idf_parser.cpp b/utils/idftools/idf_parser.cpp
index f672bd6e89..38eb556aea 100644
--- a/utils/idftools/idf_parser.cpp
+++ b/utils/idftools/idf_parser.cpp
@@ -1093,7 +1093,7 @@ bool IDF3_COMPONENT::DelDrill( IDF_DRILL_DATA* aDrill )
 }
 
 
-const std::list< IDF_DRILL_DATA* >*const IDF3_COMPONENT::GetDrills( void )
+const std::list<IDF_DRILL_DATA*>* IDF3_COMPONENT::GetDrills( void )
 {
     return &drills;
 }
diff --git a/utils/idftools/idf_parser.h b/utils/idftools/idf_parser.h
index 657017f719..5dfb5b673f 100644
--- a/utils/idftools/idf_parser.h
+++ b/utils/idftools/idf_parser.h
@@ -299,7 +299,7 @@ public:
      *
      * To avoid IDF violations, the user should not alter these entries.
      */
-    const std::list< IDF_DRILL_DATA* >* const GetDrills( void );
+    const std::list<IDF_DRILL_DATA*>* GetDrills( void );
 
     /**
      * Add the given component outline data to this component.