From fd0121236ba21f9c3e5955010ee890328eef313f Mon Sep 17 00:00:00 2001
From: PaddleStroke <pierrelouis.boyer@gmail.com>
Date: Thu, 5 Dec 2024 13:42:07 +0100
Subject: [PATCH] Sketcher: Fix first external geo deletion failure.

---
 src/Mod/Sketcher/App/SketchObject.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Sketcher/App/SketchObject.cpp b/src/Mod/Sketcher/App/SketchObject.cpp
index 52fce8745a..6680a980ef 100644
--- a/src/Mod/Sketcher/App/SketchObject.cpp
+++ b/src/Mod/Sketcher/App/SketchObject.cpp
@@ -7709,7 +7709,7 @@ int SketchObject::delExternal(const std::vector<int>& ExtGeoIds)
 {
     std::set<long> geoIds;
     for (int ExtGeoId : ExtGeoIds) {
-        int GeoId = ExtGeoId > 0 ? GeoEnum::RefExt - ExtGeoId : ExtGeoId;
+        int GeoId = ExtGeoId >= 0 ? GeoEnum::RefExt - ExtGeoId : ExtGeoId;
         if (GeoId > GeoEnum::RefExt || -GeoId - 1 >= ExternalGeo.getSize())
             return -1;