diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index c07553503e..bdc0938511 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -2684,6 +2684,7 @@ def = this->add("filament_loading_speed", coFloats);
     def = this->add("infill_wall_overlap", coPercent);
     def->label = L("Infill/Wall overlap");
     def->category = L("Strength");
+    // xgettext:no-c-format, no-boost-format
     def->tooltip = L("Infill area is enlarged slightly to overlap with wall for better bonding. The percentage value is relative to line width of sparse infill. Set this value to ~10-15% to minimize potential over extrusion and accumulation of material resulting in rough top surfaces.");
     def->sidetext = L("%");
     def->ratio_over = "inner_wall_line_width";
@@ -2693,6 +2694,7 @@ def = this->add("filament_loading_speed", coFloats);
     def = this->add("top_bottom_infill_wall_overlap", coPercent);
     def->label = L("Top/Bottom solid infill/wall overlap");
     def->category = L("Strength");
+    // xgettext:no-c-format, no-boost-format
     def->tooltip = L("Top solid infill area is enlarged slightly to overlap with wall for better bonding and to minimize the appearance of pinholes where the top infill meets the walls. A value of 25-30% is a good starting point, minimising the appearance of pinholes. The percentage value is relative to line width of sparse infill");
     def->sidetext = L("%");
     def->ratio_over = "inner_wall_line_width";