diff --git a/clmm/theory/ccl.py b/clmm/theory/ccl.py
index 86b10f0e4..2bcdb4500 100644
--- a/clmm/theory/ccl.py
+++ b/clmm/theory/ccl.py
@@ -95,12 +95,12 @@ def __init__(
         self.set_cosmo(None)
 
     def _use_projected_quad(self, use_quad):
-        if hasattr(self.hdpm, '_projected_quad'):
+        if hasattr(self.hdpm, 'projected_quad'):
             self.hdpm_opts["einasto"]["projected_quad"] = use_quad
             self._update_halo_density_profile()
         else:
             raise NotImplementedError(
-                "_projected_quad is not available on this version of CCL.")
+                "projected_quad is not available on this version of CCL.")
 
     # Functions implemented by child class
 
diff --git a/tests/test_theory.py b/tests/test_theory.py
index 526e865b8..422308434 100644
--- a/tests/test_theory.py
+++ b/tests/test_theory.py
@@ -341,6 +341,18 @@ def test_profiles(modeling_data, profile_init):
             assert_raises(
                 ValueError, mod.eval_excess_surface_density, 1e-12, cfg["SIGMA_PARAMS"]["z_cl"]
             )
+        if mod.backend == "ccl" and profile_init == "einasto":
+            if hasattr(mod.hdpm, 'projected_quad'):
+                mod.use_projected_quad(True)
+                assert_allclose(
+                    mod.eval_surface_density(
+                        cfg["SIGMA_PARAMS"]["r_proj"], cfg["SIGMA_PARAMS"]["z_cl"], verbose=True
+                    ),
+                    cfg["numcosmo_profiles"]["Sigma"],
+                    reltol*1e-1,
+                )
+                delattr(mod.hdpm, "projected_quad")
+                assert_raises(NotImplementedError, mod.use_projected_quad, True)
 
         # Functional interface tests
         # alpha_ein is None unless testing Einasto with the NC and CCL backend
diff --git a/tests/test_theory_parent.py b/tests/test_theory_parent.py
index c57d3c0f3..09bc8fa3a 100644
--- a/tests/test_theory_parent.py
+++ b/tests/test_theory_parent.py
@@ -21,6 +21,7 @@ def test_unimplemented(modeling_data):
     assert_raises(NotImplementedError, mod._update_halo_density_profile)
     assert_raises(NotImplementedError, mod._set_einasto_alpha, 0.5)
     assert_raises(NotImplementedError, mod._get_einasto_alpha)
+    assert_raises(NotImplementedError, mod._use_projected_quad, True)
     assert_raises(NotImplementedError, mod.eval_3d_density, [0.3], 0.3)
     assert_raises(NotImplementedError, mod.eval_surface_density, [0.3], 0.3)
     assert_raises(NotImplementedError, mod.eval_mean_surface_density, [0.3], 0.3)
@@ -91,6 +92,16 @@ def test_instantiate(modeling_data):
     assert_raises(ValueError, mod.set_halo_density_profile, halo_profile_model="bla")
     assert_raises(ValueError, mod.set_halo_density_profile, massdef="blu")
 
+    if theo.be_nick in ["nc", "ccl"]:
+        mod.set_halo_density_profile(massdef="virial")
+        assert_equal(mod.massdef, "virial")
+
+        # reset
+        mod.massdef = "mean"
+
+        mod.massdef = "virial"
+        assert_equal(mod.massdef, "virial")
+
     if theo.be_nick == "nc":
         import gi
 
@@ -150,3 +161,18 @@ def test_einasto(modeling_data):
         mod.eval_reduced_tangential_shear(0.1, 0.1, 0.5, verbose=True)
         mod.eval_magnification(0.1, 0.1, 0.5, verbose=True)
         mod.eval_magnification_bias(0.1, 2, 0.1, 0.5, verbose=True)
+
+
+def test_use_projected_quad(modeling_data):
+    """Test use_projected_quad method"""
+    mod = theo.Modeling()
+    assert_raises(NotImplementedError, mod.use_projected_quad, True)
+
+    if theo.be_nick == "ccl":
+        assert_raises(NotImplementedError, mod.use_projected_quad, True)
+        mod.set_halo_density_profile("hernquist")
+        assert_raises(NotImplementedError, mod.use_projected_quad, True)
+        mod.set_halo_density_profile("einasto")
+        mod.use_projected_quad(True)
+    else:
+        assert_raises(NotImplementedError, mod.use_projected_quad, True)