diff --git a/3d-viewer/3d_rendering/opengl/opengl_utils.cpp b/3d-viewer/3d_rendering/opengl/opengl_utils.cpp
index a1994fb62f..c815ca3d79 100644
--- a/3d-viewer/3d_rendering/opengl/opengl_utils.cpp
+++ b/3d-viewer/3d_rendering/opengl/opengl_utils.cpp
@@ -27,7 +27,7 @@
 #include <trigo.h>
 #include <wx/debug.h>   // For the wxASSERT
 
-#define RADPERDEG 0.0174533
+#define RADPERDEG 0.0174533f
 
 void DrawRoundArrow( SFVEC3F aPosition, SFVEC3F aTargetPos, float aSize )
 {
@@ -155,7 +155,7 @@ void DrawHalfOpenCylinder( unsigned int aNrSidesPerCircle )
         {
             SFVEC2D corner = SFVEC2D( 0.0, radius );
             RotatePoint( &corner.x, &corner.y, ii );
-            glVertex3f( corner.x, corner.y, 0.0 );
+            glVertex3f( static_cast<GLfloat>( corner.x ), static_cast<GLfloat>( corner.y ), 0.0 );
         }
 
         glVertex3d( 0.0, -radius, 0.0 );
@@ -171,7 +171,7 @@ void DrawHalfOpenCylinder( unsigned int aNrSidesPerCircle )
             SFVEC2D corner = SFVEC2D( 0.0, radius );
 
             RotatePoint( &corner.x, &corner.y, ii );
-            glVertex3f( corner.x, corner.y, 1.0 );
+            glVertex3f( static_cast<GLfloat>( corner.x ), static_cast<GLfloat>( corner.y ), 1.0 );
         }
 
         glVertex3f( 0.0, radius, 1.0 );
@@ -185,9 +185,10 @@ void DrawHalfOpenCylinder( unsigned int aNrSidesPerCircle )
             SFVEC2D corner = SFVEC2D( 0.0, radius );
 
             RotatePoint( &corner.x, &corner.y, ii );
-            glNormal3f( corner.x * 2.0f, corner.y * 2.0f, 0.0f );
-            glVertex3f( corner.x, corner.y, 1.0 );
-            glVertex3f( corner.x, corner.y, 0.0 );
+            glNormal3f( static_cast<GLfloat>( corner.x * 2.0f ),
+                        static_cast<GLfloat>( corner.y * 2.0f ), 0.0f );
+            glVertex3f( static_cast<GLfloat>( corner.x ), static_cast<GLfloat>( corner.y ), 1.0f );
+            glVertex3f( static_cast<GLfloat>( corner.x ), static_cast<GLfloat>( corner.y ), 0.0f );
         }
 
         glNormal3f( 0.0, 1.0f, 0.0f );
diff --git a/common/gal/opengl/shader.cpp b/common/gal/opengl/shader.cpp
index d245f707c0..51ef423349 100644
--- a/common/gal/opengl/shader.cpp
+++ b/common/gal/opengl/shader.cpp
@@ -165,7 +165,7 @@ void SHADER::SetParameter( int parameterNumber, float f0, float f1, float f2, fl
 void SHADER::SetParameter( int aParameterNumber, const VECTOR2D& aValue ) const
 {
     assert( (unsigned) aParameterNumber < parameterLocation.size() );
-    glUniform2f( parameterLocation[aParameterNumber], aValue.x, aValue.y );
+    glUniform2f( parameterLocation[aParameterNumber], static_cast<GLfloat>( aValue.x ), static_cast<GLfloat>( aValue.y ) );
 }
 
 
diff --git a/eeschema/dialogs/dialog_global_sym_lib_table_config.cpp b/eeschema/dialogs/dialog_global_sym_lib_table_config.cpp
index 898d26c312..79d63f8def 100644
--- a/eeschema/dialogs/dialog_global_sym_lib_table_config.cpp
+++ b/eeschema/dialogs/dialog_global_sym_lib_table_config.cpp
@@ -128,7 +128,7 @@ bool DIALOG_GLOBAL_SYM_LIB_TABLE_CONFIG::TransferDataFromWindow()
         if( !SYMBOL_LIB_TABLE::LoadGlobalTable( SYMBOL_LIB_TABLE::GetGlobalLibTable() ) )
             return false;
     }
-    catch( const IO_ERROR& ioe )
+    catch( const IO_ERROR& )
     {
         return false;
     }
diff --git a/eeschema/sim/sim_model_spice.cpp b/eeschema/sim/sim_model_spice.cpp
index 50409d1e0b..11a847c088 100644
--- a/eeschema/sim/sim_model_spice.cpp
+++ b/eeschema/sim/sim_model_spice.cpp
@@ -67,7 +67,7 @@ std::unique_ptr<SIM_MODEL_SPICE> SIM_MODEL_SPICE::Create( const SIM_LIBRARY_SPIC
             spiceModel->m_spiceModelParser->ReadModel( aLibrary, aSpiceCode );
             return std::unique_ptr<SIM_MODEL_SPICE>( spiceModel );
         }
-        catch( const IO_ERROR& e )
+        catch( const IO_ERROR& )
         {
             // Fall back to raw spice code
         }
diff --git a/libs/kimath/include/math/vector2d.h b/libs/kimath/include/math/vector2d.h
index 6f5156e027..22fe47e38b 100644
--- a/libs/kimath/include/math/vector2d.h
+++ b/libs/kimath/include/math/vector2d.h
@@ -242,7 +242,7 @@ VECTOR2<T>::VECTOR2( T aX, T aY )
 template <class T>
 T VECTOR2<T>::EuclideanNorm() const
 {
-    return sqrt( (extended_type) x * x + (extended_type) y * y );
+    return static_cast<T>( sqrt( (extended_type) x * x + (extended_type) y * y ) );
 }
 
 
@@ -421,7 +421,7 @@ VECTOR2<T> VECTOR2<T>::operator/( double aFactor ) const
     if( std::is_integral<T>::value )
         return VECTOR2<T>( KiROUND( x / aFactor ), KiROUND( y / aFactor ) );
     else
-        return VECTOR2<T>( x / aFactor, y / aFactor );
+        return VECTOR2<T>( static_cast<T>( x / aFactor ), static_cast<T>( y / aFactor ) );
 }