diff --git a/source/blender/draw/engines/gpencil/gpencil_cache_utils.cc b/source/blender/draw/engines/gpencil/gpencil_cache_utils.cc
index 019c0f1fb8e..4fb0c19f84f 100644
--- a/source/blender/draw/engines/gpencil/gpencil_cache_utils.cc
+++ b/source/blender/draw/engines/gpencil/gpencil_cache_utils.cc
@@ -68,7 +68,7 @@ GPENCIL_tObject *gpencil_object_cache_add(GPENCIL_PrivateData *pd, Object *ob)
    * computationally heavy and should go into the GPData evaluation. */
   const std::optional<Bounds<float3>> bounds = BKE_gpencil_data_minmax(gpd).value_or(
       Bounds(float3(0)));
-  float3 size = bounds->max - bounds->min;
+  float3 size = (bounds->max - bounds->min) * 0.5f;
   float3 center = math::midpoint(bounds->min, bounds->max);
   /* Convert bbox to matrix */
   float mat[4][4];
diff --git a/source/blender/draw/engines/overlay/overlay_extra.cc b/source/blender/draw/engines/overlay/overlay_extra.cc
index d067d71a708..28dc97323fd 100644
--- a/source/blender/draw/engines/overlay/overlay_extra.cc
+++ b/source/blender/draw/engines/overlay/overlay_extra.cc
@@ -366,7 +366,7 @@ static void OVERLAY_bounds(OVERLAY_ExtraCallBuffers *cb,
   const Bounds<float3> bounds = BKE_object_boundbox_get(ob).value_or(
       Bounds(float3(-1.0f), float3(1.0f)));
 
-  float3 size = bounds.max - bounds.min;
+  float3 size = (bounds.max - bounds.min) * 0.5f;
   const float3 center = around_origin ? float3(0) : math::midpoint(bounds.min, bounds.max);
 
   switch (boundtype) {
diff --git a/source/blender/draw/engines/overlay/overlay_outline.cc b/source/blender/draw/engines/overlay/overlay_outline.cc
index 92b2588e017..5c78e19e832 100644
--- a/source/blender/draw/engines/overlay/overlay_outline.cc
+++ b/source/blender/draw/engines/overlay/overlay_outline.cc
@@ -38,7 +38,7 @@ static void gpencil_depth_plane(Object *ob, float r_plane[4])
    * computationally heavy and should go into the GPData evaluation. */
   const std::optional<Bounds<float3>> bounds = BKE_object_boundbox_get(ob).value_or(
       Bounds(float3(0)));
-  float3 size = bounds->max - bounds->min;
+  float3 size = (bounds->max - bounds->min) * 0.5f;
   float3 center = math::midpoint(bounds->min, bounds->max);
   /* Convert bbox to matrix */
   float mat[4][4];