diff --git a/sdk/program/src/pubkey.rs b/sdk/program/src/pubkey.rs
index 04fcc69dc9185a..eac8e7623fe550 100644
--- a/sdk/program/src/pubkey.rs
+++ b/sdk/program/src/pubkey.rs
@@ -627,7 +627,7 @@ impl Pubkey {
         }
     }
 
-    pub fn to_bytes(self) -> [u8; 32] {
+    pub const fn to_bytes(self) -> [u8; 32] {
         self.0
     }