diff --git a/eeschema/lib_text.cpp b/eeschema/lib_text.cpp
index 356dca4408..53e826b9c7 100644
--- a/eeschema/lib_text.cpp
+++ b/eeschema/lib_text.cpp
@@ -238,7 +238,7 @@ void LIB_TEXT::Rotate( const VECTOR2I& center, bool aRotateCCW )
     }
     else
     {
-        // 180º of rotation is a mirror
+        // 180° rotation is a mirror
 
         if( GetHorizJustify() == GR_TEXT_H_ALIGN_LEFT )
             SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
diff --git a/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp b/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp
index 1fb4ebd631..55d8a0c54d 100644
--- a/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp
+++ b/eeschema/sch_plugins/kicad/sch_sexpr_plugin.cpp
@@ -740,7 +740,7 @@ void SCH_SEXPR_PLUGIN::Format( SCH_SHEET* aSheet )
     // Save cache library.
     m_out->Print( 1, "(lib_symbols\n" );
 
-    for( auto libSymbol : screen->GetLibSymbols() )
+    for( std::pair<const wxString, LIB_SYMBOL*>& libSymbol : screen->GetLibSymbols() )
         SCH_SEXPR_PLUGIN_CACHE::SaveSymbol( libSymbol.second, *m_out, 2, libSymbol.first );
 
     m_out->Print( 1, ")\n\n" );
diff --git a/eeschema/sch_screen.cpp b/eeschema/sch_screen.cpp
index c42b35eefe..c433635699 100644
--- a/eeschema/sch_screen.cpp
+++ b/eeschema/sch_screen.cpp
@@ -453,7 +453,7 @@ bool SCH_SCREEN::doIsJunction( const VECTOR2I& aPosition, bool aBreakCrossings,
     std::unordered_set<int>       exitAngles[ 2 ];
     std::vector<const SCH_LINE*>  midPointLines[ 2 ];
 
-    // A pin at 90º still shouldn't match a line at 90º so just give pins unique numbers
+    // A pin at 90° still shouldn't match a line at 90° so just give pins unique numbers
     int                           uniqueAngle = 10000;
 
     for( const SCH_ITEM* item : Items().Overlapping( aPosition ) )
diff --git a/libs/kimath/include/geometry/shape_rect.h b/libs/kimath/include/geometry/shape_rect.h
index 6633669569..d1198b92ec 100644
--- a/libs/kimath/include/geometry/shape_rect.h
+++ b/libs/kimath/include/geometry/shape_rect.h
@@ -149,7 +149,7 @@ public:
 
     /**
      * This function has limited utility for SHAPE_RECT as non-cartesian rotations will distort
-     * the rectangle.  If you might need to handle non-90º rotations then the SHAPE_RECT should
+     * the rectangle.  If you might need to handle non-90° rotations then the SHAPE_RECT should
      * first be converted to a SHAPE_SIMPLE which can then be free-rotated.
      */
     void Rotate( double aAngle, const VECTOR2I& aCenter = { 0, 0 } ) override
diff --git a/pcbnew/pcb_painter.cpp b/pcbnew/pcb_painter.cpp
index 7ae95e8b16..4736f212cb 100644
--- a/pcbnew/pcb_painter.cpp
+++ b/pcbnew/pcb_painter.cpp
@@ -888,7 +888,7 @@ void PCB_PAINTER::draw( const PAD* aPad, int aLayer )
 
             if( aPad->GetShape() != PAD_SHAPE::CUSTOM )
             {
-                // Don't allow a 45º rotation to bloat a pad's bounding box unnecessarily
+                // Don't allow a 45° rotation to bloat a pad's bounding box unnecessarily
                 double limit = std::min( aPad->GetSize().x, aPad->GetSize().y ) * 1.1;
 
                 if( padsize.x > limit && padsize.y > limit )
diff --git a/pcbnew/zone.h b/pcbnew/zone.h
index 8f19768172..3bd2d23abd 100644
--- a/pcbnew/zone.h
+++ b/pcbnew/zone.h
@@ -978,7 +978,7 @@ protected:
     /// For each layer, a set of insulated islands that were not removed
     std::map<PCB_LAYER_ID, std::set<int>> m_insulatedIslands;
 
-    bool                      m_hv45;              // constrain edges to horiz, vert or 45º
+    bool                      m_hv45;              // constrain edges to horiz, vert or 45°
 
     double                    m_area;              // The filled zone area
     double                    m_outlinearea;       // The outline zone area