diff --git a/include/project.h b/include/project.h
index 7345b5c3d7..7e296c94cb 100644
--- a/include/project.h
+++ b/include/project.h
@@ -302,7 +302,7 @@ public:
     void SetProjectLock( LOCKFILE* aLockFile );
 
     LOCKFILE* GetProjectLock() const;
- 
+
 private:
     friend class SETTINGS_MANAGER; // so that SM can set project path
     friend class TEST_NETLISTS_FIXTURE; // TODO(JE) make this not required
@@ -353,7 +353,6 @@ private:
 
 private:
     wxFileName      m_project_name;         ///< \<fullpath\>/\<basename\>.pro
-    wxString        m_pro_date_and_time;
 
     bool            m_readOnly;             ///< No project files will be written to disk
     int             m_textVarsTicker;       ///< Update counter on text vars
diff --git a/pcbnew/dialogs/panel_fp_editor_field_defaults.cpp b/pcbnew/dialogs/panel_fp_editor_field_defaults.cpp
index e47565ab7d..fab19a3ba6 100644
--- a/pcbnew/dialogs/panel_fp_editor_field_defaults.cpp
+++ b/pcbnew/dialogs/panel_fp_editor_field_defaults.cpp
@@ -173,10 +173,8 @@ static FOOTPRINT_EDITOR_SETTINGS& GetPgmSettings()
 }
 
 
-PANEL_FP_EDITOR_FIELD_DEFAULTS::PANEL_FP_EDITOR_FIELD_DEFAULTS( wxWindow*       aParent,
-                                                                UNITS_PROVIDER* aUnitsProvider ) :
+PANEL_FP_EDITOR_FIELD_DEFAULTS::PANEL_FP_EDITOR_FIELD_DEFAULTS( wxWindow* aParent ) :
         PANEL_FP_EDITOR_FIELD_DEFAULTS_BASE( aParent ),
-        m_unitProvider( aUnitsProvider ),
         m_designSettings( GetPgmSettings().m_DesignSettings )
 {
     m_fieldPropsGrid->SetTable( new TEXT_ITEMS_GRID_TABLE( true ), true );
diff --git a/pcbnew/dialogs/panel_fp_editor_field_defaults.h b/pcbnew/dialogs/panel_fp_editor_field_defaults.h
index 7a60d4d537..27c12ea0ca 100644
--- a/pcbnew/dialogs/panel_fp_editor_field_defaults.h
+++ b/pcbnew/dialogs/panel_fp_editor_field_defaults.h
@@ -32,7 +32,7 @@ class UNITS_PROVIDER;
 class PANEL_FP_EDITOR_FIELD_DEFAULTS : public PANEL_FP_EDITOR_FIELD_DEFAULTS_BASE
 {
 public:
-    PANEL_FP_EDITOR_FIELD_DEFAULTS( wxWindow* aParent, UNITS_PROVIDER* aUnitsProvider );
+    PANEL_FP_EDITOR_FIELD_DEFAULTS( wxWindow* aParent );
     ~PANEL_FP_EDITOR_FIELD_DEFAULTS() override;
 
     bool Show( bool aShow ) override;
@@ -49,6 +49,5 @@ private:
     void loadFPSettings( const FOOTPRINT_EDITOR_SETTINGS* aCfg );
 
 private:
-    UNITS_PROVIDER*        m_unitProvider;
     BOARD_DESIGN_SETTINGS& m_designSettings;
 };
diff --git a/pcbnew/pcbnew.cpp b/pcbnew/pcbnew.cpp
index 826a2e3776..551ebd870a 100644
--- a/pcbnew/pcbnew.cpp
+++ b/pcbnew/pcbnew.cpp
@@ -204,7 +204,7 @@ static struct IFACE : public KIFACE_BASE, public UNITS_PROVIDER
             if( frame )
                 SetUserUnits( frame->GetUserUnits() );
 
-            return new PANEL_FP_EDITOR_FIELD_DEFAULTS( aParent, this );
+            return new PANEL_FP_EDITOR_FIELD_DEFAULTS( aParent );
         }
 
         case PANEL_FP_DEFAULT_GRAPHICS_VALUES:
diff --git a/pcbnew/zone_manager/panel_zone_properties.cpp b/pcbnew/zone_manager/panel_zone_properties.cpp
index 948bf377c3..935b1886af 100644
--- a/pcbnew/zone_manager/panel_zone_properties.cpp
+++ b/pcbnew/zone_manager/panel_zone_properties.cpp
@@ -45,7 +45,6 @@ PANEL_ZONE_PROPERTIES::PANEL_ZONE_PROPERTIES( wxWindow* aParent, PCB_BASE_FRAME*
                                               ZONES_CONTAINER& aZoneContainer ) :
         PANEL_ZONE_PROPERTIES_BASE( aParent ),
         m_ZoneContainer( aZoneContainer ),
-        m_PCB_Frame( aPCB_FRAME ),
         m_cornerSmoothingType( ZONE_SETTINGS::SMOOTHING_UNDEFINED ),
         m_outlineHatchPitch( aPCB_FRAME, m_stBorderHatchPitchText, m_outlineHatchPitchCtrl,
                              m_outlineHatchUnits ),
diff --git a/pcbnew/zone_manager/panel_zone_properties.h b/pcbnew/zone_manager/panel_zone_properties.h
index 3ae598e426..3d50add437 100644
--- a/pcbnew/zone_manager/panel_zone_properties.h
+++ b/pcbnew/zone_manager/panel_zone_properties.h
@@ -82,9 +82,7 @@ private:
 
 
 private:
-    ZONES_CONTAINER& m_ZoneContainer;
-    PCB_BASE_FRAME*  m_PCB_Frame;
-
+    ZONES_CONTAINER&               m_ZoneContainer;
     std::shared_ptr<ZONE_SETTINGS> m_settings;
 
     int         m_cornerSmoothingType;