diff --git a/bellows/zigbee/repairs.py b/bellows/zigbee/repairs.py
index 3da8a4a0..ab01f150 100644
--- a/bellows/zigbee/repairs.py
+++ b/bellows/zigbee/repairs.py
@@ -33,7 +33,7 @@ async def fix_invalid_tclk_partner_ieee(ezsp: EZSP) -> bool:
             t.NV3KeyId.NVM3KEY_STACK_TRUST_CENTER, 0
         )
         assert status == t.EmberStatus.SUCCESS
-    except (InvalidCommandError, AttributeError):
+    except (InvalidCommandError, AttributeError, AssertionError):
         LOGGER.warning("NV3 interface not available in this firmware, please upgrade!")
         return False
 
diff --git a/tests/test_zigbee_repairs.py b/tests/test_zigbee_repairs.py
index 299f2e04..86548b9b 100644
--- a/tests/test_zigbee_repairs.py
+++ b/tests/test_zigbee_repairs.py
@@ -115,8 +115,9 @@ async def test_fix_invalid_tclk(ezsp_tclk_f: EZSP, caplog) -> None:
 
 
 @pytest.mark.parametrize("version", EZSP._BY_VERSION)
+@pytest.mark.parametrize("has_library", [(True, False)])
 async def test_fix_invalid_tclk_all_versions(
-    version: int, ezsp_tclk_f: EZSP, caplog
+    version: int, has_library: bool, ezsp_tclk_f: EZSP, caplog
 ) -> None:
     """Test that the TCLK is fixed (or not) on all versions."""
 
@@ -138,6 +139,10 @@ async def test_fix_invalid_tclk_all_versions(
             ]
         )
 
+    if not has_library:
+        ezsp.setTokenData = AsyncMock(return_value=[t.EmberStatus.LIBRARY_NOT_LOADED])
+        ezsp.getTokenData = AsyncMock(return_value=[t.EmberStatus.LIBRARY_NOT_LOADED])
+
     ezsp.getEui64 = ezsp_tclk_f.getEui64
     ezsp.getCurrentSecurityState = ezsp_tclk_f.getCurrentSecurityState
 
@@ -153,7 +158,7 @@ async def test_fix_invalid_tclk_all_versions(
 
     assert "Fixing invalid TCLK" in caplog.text
 
-    if fw_has_token_interface:
+    if fw_has_token_interface and has_library:
         assert "NV3 interface not available in this firmware" not in caplog.text
 
         assert ezsp.setTokenData.mock_calls == [