diff --git a/tests/dsp/bios_table.cpp b/tests/dsp/bios_table.cpp
index c2b73ea..99e17ba 100644
--- a/tests/dsp/bios_table.cpp
+++ b/tests/dsp/bios_table.cpp
@@ -484,6 +484,8 @@
     pldm_bios_table_iter_next(iter);
     EXPECT_TRUE(pldm_bios_table_iter_is_end(iter));
     pldm_bios_table_iter_free(iter);
+
+    EXPECT_TRUE(pldm_bios_table_iter_is_end(nullptr));
 }
 
 TEST(AttrTable, FindTest)