diff --git a/brian2/tests/test_neurongroup.py b/brian2/tests/test_neurongroup.py
index b307957a9..ff8fb7aa5 100644
--- a/brian2/tests/test_neurongroup.py
+++ b/brian2/tests/test_neurongroup.py
@@ -1120,25 +1120,25 @@ def test_state_variables():
 
     # Calculating with state variables should work too
     # With units
-    assert all(G.v - G.v == 0)
-    assert all(G.v - G.v[:] == 0 * mV)
-    assert all(G.v[:] - G.v == 0 * mV)
-    assert all(G.v + 70 * mV == G.v[:] + 70 * mV)
-    assert all(70 * mV + G.v == G.v[:] + 70 * mV)
-    assert all(G.v + G.v == 2 * G.v)
-    assert all(G.v / 2.0 == 0.5 * G.v)
-    assert all(1.0 / G.v == 1.0 / G.v[:])
+    assert_allclose(G.v - G.v, 0 * mV)
+    assert_allclose(G.v - G.v[:], 0 * mV)
+    assert_allclose(G.v[:] - G.v, 0 * mV)
+    assert_allclose(G.v + 70 * mV, G.v[:] + 70 * mV)
+    assert_allclose(70 * mV + G.v, G.v[:] + 70 * mV)
+    assert_allclose(G.v + G.v, 2 * G.v)
+    assert_allclose(G.v / 2.0, 0.5 * G.v)
+    assert_allclose(1.0 / G.v, 1.0 / G.v[:])
     assert_allclose((-G.v)[:], -G.v[:])
     assert_allclose((+G.v)[:], G.v[:])
     # Without units
-    assert all(G.v_ - G.v_ == 0)
-    assert all(G.v_ - G.v_[:] == 0)
-    assert all(G.v_[:] - G.v_ == 0)
-    assert all(G.v_ + float(70 * mV) == G.v_[:] + float(70 * mV))
-    assert all(float(70 * mV) + G.v_ == G.v_[:] + float(70 * mV))
-    assert all(G.v_ + G.v_ == 2 * G.v_)
-    assert all(G.v_ / 2.0 == 0.5 * G.v_)
-    assert all(1.0 / G.v_ == 1.0 / G.v_[:])
+    assert_allclose(G.v_ - G.v_, 0)
+    assert_allclose(G.v_ - G.v_[:], 0)
+    assert_allclose(G.v_[:] - G.v_, 0)
+    assert_allclose(G.v_ + float(70 * mV), G.v_[:] + float(70 * mV))
+    assert_allclose(float(70 * mV) + G.v_, G.v_[:] + float(70 * mV))
+    assert_allclose(G.v_ + G.v_, 2 * G.v_)
+    assert_allclose(G.v_ / 2.0, 0.5 * G.v_)
+    assert_allclose(1.0 / G.v_, 1.0 / G.v_[:])
     assert_allclose((-G.v)[:], -G.v[:])
     assert_allclose((+G.v)[:], G.v[:])