diff --git a/src/system/flashtool.cpp b/src/system/flashtool.cpp
index da1611b45..13f4a4580 100644
--- a/src/system/flashtool.cpp
+++ b/src/system/flashtool.cpp
@@ -285,6 +285,9 @@ bool CFlashTool::getInfo()
 		ErrorMessage = "can't get mtd-info";
 		return false;
 	}
+	if (meminfo.writesize < 1024)
+		meminfo.writesize = 1024;
+
 	isnand = (meminfo.type == MTD_NANDFLASH);
 	printf("CFlashTool::getInfo: NAND: %s\n", isnand ? "yes" : "no");
 	return true;