diff --git a/src/ORBextractor.cc b/src/ORBextractor.cc
index 970b7cc7bf..4a0d1d7258 100644
--- a/src/ORBextractor.cc
+++ b/src/ORBextractor.cc
@@ -556,7 +556,10 @@ namespace ORB_SLAM3
                                                          const int &maxX, const int &minY, const int &maxY, const int &N, const int &level)
     {
         // Compute how many initial nodes
-        const int nIni = round(static_cast<float>(maxX-minX)/(maxY-minY));
+        int nIni = round(static_cast<float>(maxX-minX)/(maxY-minY));
+
+        if (nIni == 0)
+            nIni = 1;
 
         const float hX = static_cast<float>(maxX-minX)/nIni;