diff --git a/src/square_lattice_SU2.jl b/src/square_lattice_SU2.jl
index ae8bc34..edac553 100644
--- a/src/square_lattice_SU2.jl
+++ b/src/square_lattice_SU2.jl
@@ -2,7 +2,7 @@ function T_1_3_A1()
 
     V = SU2Space(1//2=>1, 0=>1)
     P = SU2Space(1//2=>1)
-    T = TensorMap(zeros, ComplexF64, P, V^4)
+    T = zeros(ComplexF64, P, V^4)
 
     # a projector to the subspace with (1//2 ⊕ 0 ⊕ 0 ⊕ 0 -> 1//2) (short-range RVB)
     P_nocc_1_3 = begin
@@ -29,7 +29,7 @@ function T_3_1_A1()
 
     V = SU2Space(1//2=>1, 0=>1)
     P = SU2Space(1//2=>1)
-    T = TensorMap(zeros, ComplexF64, P, V^4)
+    T = zeros(ComplexF64, P, V^4)
 
     # a projector to the subspace with (1//2 ⊕ 1//2 ⊕ 1//2 ⊕ 0 -> 1//2) (long-range RVB)
     P_nocc_3_1 = begin
diff --git a/test/test_spatial_operations.jl b/test/test_spatial_operations.jl
index e18c738..4fe2a2c 100644
--- a/test/test_spatial_operations.jl
+++ b/test/test_spatial_operations.jl
@@ -2,7 +2,7 @@
     # TODO. more test cases
     V = SU2Space(1//2=>1, 0=>1);
     P = SU2Space(1//2=>1);
-    T = TensorMap(zeros, ComplexF64, P, V^4);
+    T = zeros(ComplexF64, P, V^4);
 
     mt = mapping_table(T)
     num_paras = num_free_parameters(T; _mapping_table=mt)
@@ -16,7 +16,7 @@ end
 @testset "spatial_operations.jl" for _ in 1:10
     V = SU2Space(1//2=>1, 0=>1)
     P = SU2Space(1//2=>1)
-    T = TensorMap(zeros, ComplexF64, P, V^6)
+    T = zeros(ComplexF64, P, V^6)
 
     permutations = [((1, ), (3, 4, 5, 6, 7, 2)), 
                     ((1, ), (4, 5, 6, 7, 2, 3)),