diff --git a/reactos/subsystems/win32/csrss/csrsrv/api/wapi.c b/reactos/subsystems/win32/csrss/csrsrv/api/wapi.c
index 9e6576bac41..2289cdf17af 100644
--- a/reactos/subsystems/win32/csrss/csrsrv/api/wapi.c
+++ b/reactos/subsystems/win32/csrss/csrsrv/api/wapi.c
@@ -172,8 +172,8 @@ CsrApiPortInitialize(VOID)
     /* Create the Port Object */
     Status = NtCreatePort(&hApiPort, //&CsrApiPort,
                           &ObjectAttributes,
-                          sizeof(CSR_CONNECTION_INFO),
-                          sizeof(CSR_API_MESSAGE),
+                          LPC_MAX_DATA_LENGTH, // hack
+                          LPC_MAX_MESSAGE_LENGTH, // hack
                           16 * PAGE_SIZE);
     if (NT_SUCCESS(Status))
     {