diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c
index 2ed8844b573..740799e06a2 100644
--- a/gdb/h8300-tdep.c
+++ b/gdb/h8300-tdep.c
@@ -48,7 +48,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define IS_SUB2_SP(x) (x==0x1b87)
 #define IS_MOVK_R5(x) (x==0x7905)
 #define IS_SUB_R5SP(x) (x==0x1957)
-CORE_ADDR examine_prologue ();
+
+static CORE_ADDR examine_prologue ();
 
 void frame_find_saved_regs ();
 CORE_ADDR