diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index e3ad309b02..048a428e40 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -2727,8 +2727,8 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
 
         auto probe_dist_x  = std::max(1., m_config.bed_mesh_probe_distance.value.x());
         auto probe_dist_y  = std::max(1., m_config.bed_mesh_probe_distance.value.y());
-        int  probe_count_x = std::max(3, (int) std::ceil(mesh_bbox.size().x() / probe_dist_x));
-        int  probe_count_y = std::max(3, (int) std::ceil(mesh_bbox.size().y() / probe_dist_y));
+        int  probe_count_x = std::max(3, (int) std::ceil(mesh_bbox.size().x() / probe_dist_x) + 1);
+        int  probe_count_y = std::max(3, (int) std::ceil(mesh_bbox.size().y() / probe_dist_y) + 1);
         auto bed_mesh_algo = "bicubic";
         if (probe_count_x * probe_count_y <= 6) { // lagrange needs up to a total of 6 mesh points
             bed_mesh_algo = "lagrange";