diff --git a/dlls/oledb32/oledb_private.h b/dlls/oledb32/oledb_private.h
index fee0318de14..773b646f08e 100644
--- a/dlls/oledb32/oledb_private.h
+++ b/dlls/oledb32/oledb_private.h
@@ -27,8 +27,3 @@ HRESULT get_data_source(IUnknown *outer, DWORD clsctx, LPWSTR initstring, REFIID
     IUnknown **datasource) DECLSPEC_HIDDEN;
 
 extern HINSTANCE instance;
-
-static inline void* __WINE_ALLOC_SIZE(2) heap_realloc_zero(void *mem, size_t size)
-{
-    return HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, mem, size);
-}
diff --git a/dlls/oledb32/rowpos.c b/dlls/oledb32/rowpos.c
index 128208a9da3..142a2d7fdb1 100644
--- a/dlls/oledb32/rowpos.c
+++ b/dlls/oledb32/rowpos.c
@@ -28,7 +28,6 @@
 
 #include "oledb_private.h"
 #include "wine/debug.h"
-#include "wine/heap.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(oledb);
 
@@ -152,7 +151,7 @@ static ULONG WINAPI rowpos_Release(IRowPosition* iface)
         if (This->rowset) IRowset_Release(This->rowset);
         if (This->chrst) IChapteredRowset_Release(This->chrst);
         rowposchange_cp_destroy(&This->cp);
-        heap_free(This);
+        free(This);
     }
 
     return ref;
@@ -405,16 +404,17 @@ static HRESULT WINAPI rowpos_cp_Advise(IConnectionPoint *iface, IUnknown *unksin
 
         if (i == This->sinks_size)
         {
-            new_sinks = heap_realloc_zero(This->sinks, 2 * This->sinks_size * sizeof(*This->sinks));
+            new_sinks = realloc(This->sinks, 2 * This->sinks_size * sizeof(*This->sinks));
             if (!new_sinks)
                 return E_OUTOFMEMORY;
+            memset(new_sinks + This->sinks_size, 0, This->sinks_size * sizeof(*This->sinks));
             This->sinks = new_sinks;
             This->sinks_size *= 2;
         }
     }
     else
     {
-        This->sinks = heap_alloc_zero(10 * sizeof(*This->sinks));
+        This->sinks = calloc(10, sizeof(*This->sinks));
         if (!This->sinks)
             return E_OUTOFMEMORY;
         This->sinks_size = 10;
@@ -477,7 +477,7 @@ void rowposchange_cp_destroy(rowpos_cp *cp)
         if (cp->sinks[i])
             IRowPositionChange_Release(cp->sinks[i]);
     }
-    heap_free(cp->sinks);
+    free(cp->sinks);
 }
 
 HRESULT create_oledb_rowpos(IUnknown *outer, void **obj)
@@ -490,7 +490,7 @@ HRESULT create_oledb_rowpos(IUnknown *outer, void **obj)
 
     if(outer) return CLASS_E_NOAGGREGATION;
 
-    This = heap_alloc(sizeof(*This));
+    This = malloc(sizeof(*This));
     if(!This) return E_OUTOFMEMORY;
 
     This->IRowPosition_iface.lpVtbl = &rowpos_vtbl;