diff --git a/reactos/include/ndk/rtlfuncs.h b/reactos/include/ndk/rtlfuncs.h
index 268049d35ee..3713530250b 100644
--- a/reactos/include/ndk/rtlfuncs.h
+++ b/reactos/include/ndk/rtlfuncs.h
@@ -2328,6 +2328,15 @@ RtlFindClearBitsAndSet(
     IN ULONG HintIndex
 );
 
+NTSYSAPI
+ULONG
+NTAPI
+RtlFindNextForwardRunClear(
+    IN PRTL_BITMAP BitMapHeader,
+    IN ULONG FromIndex,
+    IN PULONG StartingRunIndex
+);
+
 NTSYSAPI
 VOID
 NTAPI
@@ -2337,6 +2346,13 @@ RtlInitializeBitMap(
     IN ULONG SizeOfBitMap
 );
 
+NTSYSAPI
+ULONG
+NTAPI
+RtlNumberOfSetBits(
+    IN PRTL_BITMAP BitMapHeader
+);
+
 NTSYSAPI
 VOID
 NTAPI
diff --git a/reactos/ntoskrnl/ob/obdir.c b/reactos/ntoskrnl/ob/obdir.c
index dac008026eb..6cc9b96d2e8 100644
--- a/reactos/ntoskrnl/ob/obdir.c
+++ b/reactos/ntoskrnl/ob/obdir.c
@@ -220,9 +220,6 @@ ObpLookupEntryDirectory(IN POBJECT_DIRECTORY Directory,
         /* Save the found object */
         FoundObject = CurrentEntry->Object;
         if (!FoundObject) goto Quickie;
-
-        /* Add a reference to the object */
-        ObReferenceObject(FoundObject);
     }
 
     /* Check if the directory was unlocked (which means we locked it) */
diff --git a/reactos/ntoskrnl/ob/obhandle.c b/reactos/ntoskrnl/ob/obhandle.c
index 9abbce0c3d3..ec1d2b0e44d 100644
--- a/reactos/ntoskrnl/ob/obhandle.c
+++ b/reactos/ntoskrnl/ob/obhandle.c
@@ -1382,7 +1382,6 @@ ObDuplicateObject(IN PEPROCESS SourceProcess,
     }
 
     /* Now create the handle */
-    ObDereferenceObject(SourceObject);
     NewHandle = ExCreateHandle(HandleTable, &NewHandleEntry);
     if (!NewHandle)
     {
diff --git a/reactos/ntoskrnl/ob/obname.c b/reactos/ntoskrnl/ob/obname.c
index 59c3c93636e..a670238e1a6 100644
--- a/reactos/ntoskrnl/ob/obname.c
+++ b/reactos/ntoskrnl/ob/obname.c
@@ -102,6 +102,7 @@ ObpDeleteNameCheck(IN PVOID Object)
         /* Check if we were inserted in a directory */
         if (Directory)
         {
+            /* We were, so dereference the directory and the object as well */
             ObDereferenceObject(Directory);
             ObDereferenceObject(Object);
         }
diff --git a/reactos/ntoskrnl/ob/obref.c b/reactos/ntoskrnl/ob/obref.c
index fcdf068d65c..d955c10b061 100644
--- a/reactos/ntoskrnl/ob/obref.c
+++ b/reactos/ntoskrnl/ob/obref.c
@@ -88,7 +88,7 @@ ObfDereferenceObject(IN PVOID Object)
     /* Extract the object header */
     Header = OBJECT_TO_OBJECT_HEADER(Object);
 
-    if (Header->PointerCount <= Header->HandleCount)
+    if (Header->PointerCount < Header->HandleCount)
     {
         DPRINT1("Misbehaving object: %wZ\n", &Header->Type->Name);
         return;
@@ -98,7 +98,7 @@ ObfDereferenceObject(IN PVOID Object)
     if (!(InterlockedDecrement(&Header->PointerCount)))
     {
         /* Sanity check */
-        if(Header->HandleCount)
+        if (Header->HandleCount)
         {
             DPRINT1("Misbehaving object: %wZ\n", &Header->Type->Name);
             return;