diff --git a/82802ab.c b/82802ab.c
index cdc3d73..1316939 100644
--- a/82802ab.c
+++ b/82802ab.c
@@ -97,7 +97,7 @@
 	int i;
 	//chipaddr wrprotect = flash->virtual_registers + page + 2;
 
-	for (i = 0; i < flash->total_size; i+= flash->page_size)
+	for (i = 0; i < flash->total_size * 1024; i+= flash->page_size)
 	{
 		chip_writeb(0, flash->virtual_registers + i + 2);
 	}
diff --git a/stm50flw0x0x.c b/stm50flw0x0x.c
index 1838efc..3300969 100644
--- a/stm50flw0x0x.c
+++ b/stm50flw0x0x.c
@@ -85,7 +85,7 @@
 {
 	int i;
 
-	for (i = 0; i < flash->total_size; i+= flash->page_size) {
+	for (i = 0; i < flash->total_size * 1024; i+= flash->page_size) {
 		if(unlock_block_stm50flw0x0x(flash, i)) {
 			fprintf(stderr, "UNLOCK FAILED!\n");
 			return -1;