diff --git a/gerbview/class_aperture_macro.cpp b/gerbview/class_aperture_macro.cpp
index 3bc52fd4fe..24b3c43860 100644
--- a/gerbview/class_aperture_macro.cpp
+++ b/gerbview/class_aperture_macro.cpp
@@ -116,14 +116,31 @@ void AM_PRIMITIVE::DrawBasicShape( GERBER_DRAW_ITEM* aParent,
     {
         /* Generated by an aperture macro declaration like:
          * "1,1,0.3,0.5, 1.0*"
-         * type (1), exposure, diameter, pos.x, pos.y
+         * type (1), exposure, diameter, pos.x, pos.y, <rotation>
+         * <rotation> is a optional parameter: rotation form origin
          * type is not stored in parameters list, so the first parameter is exposure
          */
-        curPos += mapPt( params[2].GetValue( tool ), params[3].GetValue( tool ), m_GerbMetric );
-        curPos = aParent->GetABPosition( curPos );
+        wxPoint center = mapPt( params[2].GetValue( tool ), params[3].GetValue( tool ), m_GerbMetric );
         int radius = scaletoIU( params[1].GetValue( tool ), m_GerbMetric ) / 2;
 
-        TransformCircleToPolygon( aShapeBuffer, curPos, radius, seg_per_circle );
+        TransformCircleToPolygon( aShapeBuffer, center, radius, seg_per_circle );
+
+        SHAPE_LINE_CHAIN& poly = aShapeBuffer.Outline( aShapeBuffer.OutlineCount() - 1 );
+
+        // shape rotation (if any):
+        if( params.size() >= 5 )
+        {
+            rotation = params[4].GetValue( tool ) * 10.0;
+
+            if( rotation != 0)
+            {
+                for( int ii = 0; ii < poly.PointCount(); ii++ )
+                    RotatePoint( &poly.Point(ii).x, &poly.Point(ii).y, rotation );
+            }
+        }
+
+        // Move to current position:
+        poly.Move( aParent->GetABPosition( curPos ) );
     }
     break;
 
@@ -434,8 +451,8 @@ void AM_PRIMITIVE::ConvertShapeToPolygon( GERBER_DRAW_ITEM*     aParent,
         wxPoint delta = end - start;
         int     len   = KiROUND( EuclideanNorm( delta ) );
 
-        // To build the polygon, we must create a horizonta polygon starting to "start"
-        // and rotate it to have it end point to "end"
+        // To build the polygon, we must create a horizontal polygon starting to "start"
+        // and rotate it to have the end point to "end"
         wxPoint currpt;
         currpt.y += width / 2;          // Upper left
         aBuffer.push_back( currpt );
@@ -443,7 +460,7 @@ void AM_PRIMITIVE::ConvertShapeToPolygon( GERBER_DRAW_ITEM*     aParent,
         aBuffer.push_back( currpt );
         currpt.y -= width;              // lower right
         aBuffer.push_back( currpt );
-        currpt.x = 0;                   // Upper left
+        currpt.x = 0;                   // lower left
         aBuffer.push_back( currpt );
 
         // Rotate rectangle and move it to the actual start point
diff --git a/gerbview/rs274x.cpp b/gerbview/rs274x.cpp
index 2617383430..74aacfa530 100644
--- a/gerbview/rs274x.cpp
+++ b/gerbview/rs274x.cpp
@@ -1045,7 +1045,8 @@ bool GERBER_FILE_IMAGE::ReadApertureMacro( char *buff,
         if( *text == '%' )
             break;      // exit with text still pointing at %
 
-        int paramCount = 0;
+        int paramCount = 0; // will be set to the minimal parameters count,
+                            // depending on the actual primitive
         int primitive_type = AMP_UNKNOWN;
         // Test for a valid symbol at the beginning of a description:
         // it can be: a parameter declaration like $1=$2/4
@@ -1084,7 +1085,7 @@ bool GERBER_FILE_IMAGE::ReadApertureMacro( char *buff,
             break;
 
         case AMP_CIRCLE:
-            paramCount = 4;
+            paramCount = 4; // minimal count. can have a optional parameter (rotation)
             break;
 
         case AMP_LINE2:
@@ -1132,7 +1133,7 @@ bool GERBER_FILE_IMAGE::ReadApertureMacro( char *buff,
         prim.primitive_id = (AM_PRIMITIVE_ID) primitive_type;
         int ii;
 
-        for( ii = 0; ii < paramCount && *text && *text != '*'; ++ii )
+        for( ii = 0; ii < *text && *text != '*'; ++ii )
         {
             prim.params.push_back( AM_PARAM() );