diff --git a/modules/es/ut-coverage/es_UT.c b/modules/es/ut-coverage/es_UT.c
index f788e2704..e968f9c2a 100644
--- a/modules/es/ut-coverage/es_UT.c
+++ b/modules/es/ut-coverage/es_UT.c
@@ -697,7 +697,15 @@ void TestStartupErrorPaths(void)
               PanicStatus == CFE_PSP_PANIC_STARTUP_SEM && UT_GetStubCount(UT_KEY(CFE_PSP_Panic)) == 1, "CFE_ES_Main",
               "Mutex create failure");
 
-    /* Perform ES main startup with a file open failure */
+    /* Perform ES main startup with a ES Perf Data mutex creation failure */
+    ES_ResetUnitTest();
+    UT_SetDeferredRetcode(UT_KEY(OS_MutSemCreate), 2, OS_ERROR);
+    UT_SetDataBuffer(UT_KEY(CFE_PSP_Panic), &PanicStatus, sizeof(PanicStatus), false);
+    CFE_ES_Main(CFE_PSP_RST_TYPE_POWERON, 1, 1, "ut_startup");
+    UtAssert_UINT32_EQ(PanicStatus, CFE_PSP_PANIC_STARTUP_SEM);
+    UtAssert_UINT32_EQ(UT_GetStubCount(UT_KEY(CFE_PSP_Panic)), 1);
+
+    /* Perform ES main startup with a ES Shared Data mutex creation failure */
     ES_ResetUnitTest();
     UT_SetDummyFuncRtn(OS_SUCCESS);
     UT_SetDefaultReturnValue(UT_KEY(OS_OpenCreate), OS_ERROR);
@@ -963,6 +971,13 @@ void TestStartupErrorPaths(void)
     UT_Report(__FILE__, __LINE__, UT_PrintfIsInHistory(UT_OSP_MESSAGES[UT_OSP_FUNCTION_POINTER]),
               "CFE_ES_CreateObjects", "Bad function pointer message");
 
+    /* Test reading the object table with a NULL object type */
+    ES_ResetUnitTest();
+    UT_SetDefaultReturnValue(UT_KEY(CFE_ResourceId_FindNext), OS_ERROR);
+    CFE_ES_ObjectTable[CFE_PLATFORM_ES_OBJECT_TABLE_SIZE-1].ObjectType = -1; /* Set last entry to unknown type */
+    CFE_ES_CreateObjects();
+    CFE_UtAssert_PrintfIsInHistory((UT_OSP_MESSAGES[UT_OSP_NO_FREE_CORE_APP_SLOTS]));
+
     /* Test response to an invalid startup type */
     ES_ResetUnitTest();
     CFE_ES_Global.DebugVars.DebugFlag = 1;