diff --git a/sd/source/ui/annotations/annotationmanager.cxx b/sd/source/ui/annotations/annotationmanager.cxx
index a608df2..613dfd1 100644
--- a/sd/source/ui/annotations/annotationmanager.cxx
+++ b/sd/source/ui/annotations/annotationmanager.cxx
@@ -1137,7 +1137,7 @@ Color AnnotationManagerImpl::GetColor(sal_uInt16 aAuthorIndex)
             COL_AUTHOR4_NORMAL,		COL_AUTHOR5_NORMAL,		COL_AUTHOR6_NORMAL,
             COL_AUTHOR7_NORMAL,		COL_AUTHOR8_NORMAL,		COL_AUTHOR9_NORMAL };
 
-        return Color( aArrayNormal[ aAuthorIndex % (sizeof( aArrayNormal )/ sizeof( aArrayNormal[0] ))]);
+        return Color( aArrayNormal[ aAuthorIndex % (SAL_N_ELEMENTS(aArrayNormal))]);
     }
     else
         return Color(COL_WHITE);
@@ -1152,7 +1152,7 @@ Color AnnotationManagerImpl::GetColorLight(sal_uInt16 aAuthorIndex)
             COL_AUTHOR4_LIGHT,		COL_AUTHOR5_LIGHT,		COL_AUTHOR6_LIGHT,
             COL_AUTHOR7_LIGHT,		COL_AUTHOR8_LIGHT,		COL_AUTHOR9_LIGHT };
 
-        return Color( aArrayLight[ aAuthorIndex % (sizeof( aArrayLight )/ sizeof( aArrayLight[0] ))]);
+        return Color( aArrayLight[ aAuthorIndex % (SAL_N_ELEMENTS(aArrayLight))]);
     }
     else
         return Color(COL_WHITE);
@@ -1167,7 +1167,7 @@ Color AnnotationManagerImpl::GetColorDark(sal_uInt16 aAuthorIndex)
             COL_AUTHOR4_DARK,		COL_AUTHOR5_DARK,		COL_AUTHOR6_DARK,
             COL_AUTHOR7_DARK,		COL_AUTHOR8_DARK,		COL_AUTHOR9_DARK };
 
-        return Color( aArrayAnkor[  aAuthorIndex % (sizeof( aArrayAnkor )	/ sizeof( aArrayAnkor[0] ))]);
+        return Color( aArrayAnkor[  aAuthorIndex % (SAL_N_ELEMENTS(aArrayAnkor))]);
     }
     else
         return Color(COL_WHITE);