diff --git a/src/fork_exec/spawn.rs b/src/fork_exec/spawn.rs
index f1c59cec7..f1a5ed8af 100644
--- a/src/fork_exec/spawn.rs
+++ b/src/fork_exec/spawn.rs
@@ -116,7 +116,7 @@ pub fn new(
         };
 
         // Set our flags.
-        let mut flags: i32 = 0;
+        let mut flags = 0;
         flags |= libc::POSIX_SPAWN_SETSIGDEF;
         flags |= libc::POSIX_SPAWN_SETSIGMASK;
         if desired_pgid.is_some() {