1 files changed, 4 insertions, 1 deletions
diff --git a/source/blender/modifiers/intern/MOD_weld.c b/source/blender/modifiers/intern/MOD_weld.c
index 11fd411459c..a7d3280b113 100644
--- a/source/blender/modifiers/intern/MOD_weld.c
+++ b/source/blender/modifiers/intern/MOD_weld.c
@@ -1489,6 +1489,8 @@ static void customdata_weld(
     return;
   }
 
+  CustomData_interp(source, dest, (const int *)src_indices, NULL, NULL, count, dest_index);
+
   int src_i, dest_i;
   int j;
 
@@ -1544,7 +1546,8 @@ static void customdata_weld(
         }
       }
       else if (CustomData_layer_has_interp(dest, dest_i)) {
-        CustomData_interp(source, dest, (const int *)src_indices, NULL, NULL, count, dest_index);
+        /* Already calculated.
+         * TODO: Optimize by exposing `typeInfo->interp`. */
       }
       else if (CustomData_layer_has_math(dest, dest_i)) {
         const int size = CustomData_sizeof(type);