diff --git a/sw/deployer/src/sc64/ftdi.rs b/sw/deployer/src/sc64/ftdi.rs
index 4a7db96..76cfd5a 100644
--- a/sw/deployer/src/sc64/ftdi.rs
+++ b/sw/deployer/src/sc64/ftdi.rs
@@ -1,3 +1,5 @@
+use std::ffi::c_char;
+
 pub struct DeviceInfo {
     pub description: String,
     pub serial: String,
@@ -73,8 +75,8 @@ impl Wrapper {
         let result = if devices > 0 {
             let mut list: Vec<DeviceInfo> = vec![];
 
-            let mut description = [0i8; 128];
-            let mut serial = [0i8; 128];
+            let mut description = [c_char::from(0); 128];
+            let mut serial = [c_char::from(0); 128];
 
             let mut device = device_list;
             let mut index = 0;