diff --git a/hgsane/sane_hg_mdw.cpp b/hgsane/sane_hg_mdw.cpp
index 7a8029e..b3ebaca 100644
--- a/hgsane/sane_hg_mdw.cpp
+++ b/hgsane/sane_hg_mdw.cpp
@@ -1768,7 +1768,7 @@ SANE_Option_Descriptor* hg_sane_middleware::get_option_descriptor(SANE_Handle h,
 }
 SANE_Status hg_sane_middleware::set_option(SANE_Handle h, const void* option, SANE_Action action, void* value, SANE_Int* after_do)
 {
-	if ((IS_PTR_NUMBER(option) && (int)option == SANE_OPT_ID_DRIVER_LOG) ||
+	if ((IS_PTR_NUMBER(option) && (int)(long)option == SANE_OPT_ID_DRIVER_LOG) ||
 		(!IS_PTR_NUMBER(option) && strcmp((const char*)option, SANE_STD_OPT_NAME_DRIVER_LOG) == 0))
 	{
 		// omit value of 'h' ...