diff --git a/dlls/inetcomm/mimeole.c b/dlls/inetcomm/mimeole.c
index 871ffa502af..992949a44ef 100644
--- a/dlls/inetcomm/mimeole.c
+++ b/dlls/inetcomm/mimeole.c
@@ -1610,6 +1610,7 @@ static HRESULT create_body_offset_list(IStream *stm, const char *boundary, struc
     } while(1);
 
 end:
+    HeapFree(GetProcessHeap(), 0, nl_boundary);
     HeapFree(GetProcessHeap(), 0, buf);
     return hr;
 }