diff --git a/src/os.rs b/src/os.rs
index 633594e..10022fb 100644
--- a/src/os.rs
+++ b/src/os.rs
@@ -102,7 +102,7 @@
         #[cfg(target_arch = "aarch64")]
         const NR_GETRANDOM: libc::c_long = 278;
         #[cfg(target_arch = "powerpc")]
-        const NR_GETRANDOM: libc::c_long = 384;
+        const NR_GETRANDOM: libc::c_long = 359;
 
         unsafe {
             syscall(NR_GETRANDOM, buf.as_mut_ptr(), buf.len(), 0)