diff --git a/ntfsprogs/sd.c b/ntfsprogs/sd.c
index 7db46eff..3a5e2f45 100644
--- a/ntfsprogs/sd.c
+++ b/ntfsprogs/sd.c
@@ -27,6 +27,7 @@
  * Do NOT free *@sd_val as it is static memory. This also means that you can
  * only use *@sd_val until the next call to this function.
  */
+void init_system_file_sd(int sys_file_no, char **sd_val, int *sd_val_len);
 void init_system_file_sd(int sys_file_no, char **sd_val, int *sd_val_len)
 {
 	static char sd_array[0x68];
diff --git a/ntfsprogs/upcase.c b/ntfsprogs/upcase.c
index ea78d7c1..ae5db1e0 100644
--- a/ntfsprogs/upcase.c
+++ b/ntfsprogs/upcase.c
@@ -31,6 +31,7 @@
 /**
  * init_upcase_table
  */
+void init_upcase_table(uchar_t *uc, u32 uc_len);
 void init_upcase_table(uchar_t *uc, u32 uc_len)
 {
 	static int uc_run_table[][3] = { /* Start, End, Add */