diff --git a/source/blender/blenkernel/intern/deform.c b/source/blender/blenkernel/intern/deform.c
index 350b19b0250..72133cf6460 100644
--- a/source/blender/blenkernel/intern/deform.c
+++ b/source/blender/blenkernel/intern/deform.c
@@ -982,7 +982,7 @@ void BKE_defvert_extract_vgroup_to_vertweights(
 		}
 	}
 	else {
-		fill_vn_fl(r_weights, invert_vgroup ? 1.0f : 0.0f, num_verts);
+		fill_vn_fl(r_weights, num_verts, invert_vgroup ? 1.0f : 0.0f);
 	}
 }
 
@@ -1008,7 +1008,7 @@ void BKE_defvert_extract_vgroup_to_edgeweights(
 		MEM_freeN(tmp_weights);
 	}
 	else {
-		fill_vn_fl(r_weights, 0.0f, num_edges);
+		fill_vn_fl(r_weights, num_edges, 0.0f);
 	}
 }
 
@@ -1031,7 +1031,7 @@ void BKE_defvert_extract_vgroup_to_loopweights(
 		MEM_freeN(tmp_weights);
 	}
 	else {
-		fill_vn_fl(r_weights, 0.0f, num_loops);
+		fill_vn_fl(r_weights, num_loops, 0.0f);
 	}
 }
 
@@ -1060,7 +1060,7 @@ void BKE_defvert_extract_vgroup_to_polyweights(
 		MEM_freeN(tmp_weights);
 	}
 	else {
-		fill_vn_fl(r_weights, 0.0f, num_polys);
+		fill_vn_fl(r_weights, num_polys, 0.0f);
 	}
 }