diff --git a/src/ifcgeom/kernels/opencascade/boolean_utils.cpp b/src/ifcgeom/kernels/opencascade/boolean_utils.cpp
index ac315bcb32..cde875a07f 100644
--- a/src/ifcgeom/kernels/opencascade/boolean_utils.cpp
+++ b/src/ifcgeom/kernels/opencascade/boolean_utils.cpp
@@ -845,7 +845,7 @@ bool IfcGeom::util::boolean_operation(const boolean_settings& settings, const To
 	}
 
 	if (fuzziness < 0.) {
-		fuzziness = settings.precision / 10.;
+		fuzziness = settings.precision / 100.;
 	}
 
 	/*