diff --git a/Polygon_repair/doc/Polygon_repair/Polygon_repair.txt b/Polygon_repair/doc/Polygon_repair/Polygon_repair.txt
index 34e7145d474..1203ab95c6e 100644
--- a/Polygon_repair/doc/Polygon_repair/Polygon_repair.txt
+++ b/Polygon_repair/doc/Polygon_repair/Polygon_repair.txt
@@ -98,11 +98,11 @@ Input (left), non-zero (middle) even-odd (right).
 
 \section SectionPolygonRepair_UnionIntersection Union and Intersection Rule
 
-Given several valid polygons these rules apply a %Boolean operation:
+Given several valid polygons these rules apply a Boolean operation:
 In the arrangement of two valid multipolygons with holes, the faces that are in any and both multipolygons
 with holes are in the resulting multipolygon with holes for a union and intersection, respectively.
 
-While this %Boolean operation works for any two valid multipolygons, in the scope of repairing
+While this Boolean operation works for any two valid multipolygons, in the scope of repairing
 it serves to obtain an approximation from outside and inside when applying union and intersection, respectively,
 when the input is similar.