diff --git a/programs/bpf_loader/src/syscalls/mod.rs b/programs/bpf_loader/src/syscalls/mod.rs
index 16fa679cb3bccf..ec4b46b635eb21 100644
--- a/programs/bpf_loader/src/syscalls/mod.rs
+++ b/programs/bpf_loader/src/syscalls/mod.rs
@@ -311,10 +311,10 @@ pub fn create_program_runtime_environment_v1<'a>(
     )?;
 
     // Sha256
-    result.register_function(*b"sol_sha256", SyscallHash::call::<Sha256Hasher>)?;
+    result.register_function_hashed(*b"sol_sha256", SyscallHash::call::<Sha256Hasher>)?;
 
     // Keccak256
-    result.register_function(*b"sol_keccak256", SyscallHash::call::<Keccak256Hasher>)?;
+    result.register_function_hashed(*b"sol_keccak256", SyscallHash::call::<Keccak256Hasher>)?;
 
     // Secp256k1 Recover
     result.register_function_hashed(*b"sol_secp256k1_recover", SyscallSecp256k1Recover::call)?;