diff --git a/extendedcommands.c b/extendedcommands.c
index 5543e96..9439739 100644
--- a/extendedcommands.c
+++ b/extendedcommands.c
@@ -500,7 +500,7 @@ int is_safe_to_format(char* name)
 {
     char str[255];
     char* partition;
-    property_get("ro.cwm.forbid_format", str, "/misc,/radio,/bootloader,/recovery");
+    property_get("ro.cwm.forbid_format", str, "/misc,/radio,/bootloader,/recovery,/efs");
 
     partition = strtok(str, ", ");
     while (partition != NULL) {