diff --git a/scripts/build/config b/scripts/build/config
index 607425d9f..3c62d2212 100755
--- a/scripts/build/config
+++ b/scripts/build/config
@@ -1223,7 +1223,7 @@ LB_ISO_PUBLISHER="${LB_ISO_PUBLISHER}"
 LB_ISO_VOLUME="${LB_ISO_VOLUME}"
 
 # Set jffs2 eraseblock size
-LB_JFFS2_ERASEBLOCK=""
+LB_JFFS2_ERASEBLOCK="${LB_JFFS2_ERASEBLOCK}"
 
 # Set memtest
 LB_MEMTEST="${LB_MEMTEST}"