diff --git a/src/t_array.rs b/src/t_array.rs
index cc60c94..ad5674b 100644
--- a/src/t_array.rs
+++ b/src/t_array.rs
@@ -43,7 +43,7 @@ impl TArray {
     pub fn clear(&mut self, len: u32) -> Self {
         if self.data_ptr != 0 && self.len > 0 {
             let data = unsafe {
-                std::slice::from_raw_parts_mut(self.data_ptr as *mut u8, self.len)
+                std::slice::from_raw_parts_mut(self.data_ptr as *mut u8, self.len as usize)
             };
             data.fill(0);
             self.len = 0;