diff --git a/src/encryption/enc_tuple.c b/src/encryption/enc_tuple.c
index 5145a602..1c6c3206 100644
--- a/src/encryption/enc_tuple.c
+++ b/src/encryption/enc_tuple.c
@@ -48,7 +48,7 @@ SetIVPrefix(ItemPointerData* ip, char* iv_prefix)
  * start_offset: is the absolute location of start of data in the file.
  * This function assumes that everything is in a single block, and has an assertion ensuring this
  */
-void
+static void
 pg_tde_crypt_simple(const char* iv_prefix, uint32 start_offset, const char* data, uint32 data_len, char* out, RelKeysData* keys, const char* context)
 {
 	const uint64 aes_start_block = start_offset / AES_BLOCK_SIZE;
@@ -85,7 +85,7 @@ pg_tde_crypt_simple(const char* iv_prefix, uint32 start_offset, const char* data
  * start_offset: is the absolute location of start of data in the file.
  * This is a generic function indented for large data, that od not fit into a single block
  */
-void
+static void
 pg_tde_crypt_complex(const char* iv_prefix, uint32 start_offset, const char* data, uint32 data_len, char* out, RelKeysData* keys, const char* context)
 {
 	const uint64 aes_start_block = start_offset / AES_BLOCK_SIZE;
diff --git a/src/include/encryption/enc_tuple.h b/src/include/encryption/enc_tuple.h
index b5c7f017..f0173373 100644
--- a/src/include/encryption/enc_tuple.h
+++ b/src/include/encryption/enc_tuple.h
@@ -16,10 +16,6 @@
 #include "executor/tuptable.h"
 #include "access/pg_tde_tdemap.h"
 
-extern void
-pg_tde_crypt_simple(const char* iv_prefix, uint32 start_offset, const char* data, uint32 data_len, char* out, RelKeysData* keys, const char* context);
-extern void
-pg_tde_crypt_complex(const char* iv_prefix, uint32 start_offset, const char* data, uint32 data_len, char* out, RelKeysData* keys, const char* context);
 extern void
 pg_tde_crypt(const char* iv_prefix, uint32 start_offset, const char* data, uint32 data_len, char* out, RelKeysData* keys, const char* context);
 extern void