diff --git a/libautobar/src/lib.rs b/libautobar/src/lib.rs
index 976c226..8c2cdc5 100644
--- a/libautobar/src/lib.rs
+++ b/libautobar/src/lib.rs
@@ -14,9 +14,11 @@ extern {
 
 #[no_mangle]
 pub extern "C" fn set_and_sleep(pin: i32, status: bool, time: i32) -> () {
-    unsafe {
-        gpio_put_explict(pin, status);
-        sleep_ms(time);
+    if pin <= 28 {
+        unsafe {
+            gpio_put_explict(pin, status);
+            sleep_ms(time);
+        }
     }
 }