diff --git a/Quake/pr_cmds.c b/Quake/pr_cmds.c
index 7d46a14a..c3950b68 100644
--- a/Quake/pr_cmds.c
+++ b/Quake/pr_cmds.c
@@ -1705,7 +1705,7 @@ static void PF_walkpathtogoal (void)
 {
 	G_FLOAT(OFS_RETURN) = 0; /* PATH_ERROR */
 }
-void PF_localsound (void)
+static void PF_localsound (void)
 {
 	const char	*sample;
 	int		entnum;
@@ -1834,6 +1834,5 @@ static builtin_t pr_builtin[] =
 	PF_Fixme,
 };
 
-builtin_t *pr_builtins = pr_builtin;
-int pr_numbuiltins = sizeof(pr_builtin)/sizeof(pr_builtin[0]);
-
+const builtin_t *pr_builtins = pr_builtin;
+const int pr_numbuiltins = sizeof(pr_builtin) / sizeof(pr_builtin[0]);
diff --git a/Quake/progs.h b/Quake/progs.h
index c8f0cf2d..8a15416b 100644
--- a/Quake/progs.h
+++ b/Quake/progs.h
@@ -20,8 +20,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 */
 
-#ifndef _QUAKE_PROGS_H
-#define _QUAKE_PROGS_H
+#ifndef QUAKE_PROGS_H
+#define QUAKE_PROGS_H
 
 #include "pr_comp.h"	/* defs shared with qcc */
 #include "progdefs.h"	/* generated by program cdefs */
@@ -95,8 +95,8 @@ void ED_LoadFromFile (const char *data);
 #define EDICT_NUM(n)		((edict_t *)(sv.edicts+ (n)*pr_edict_size))
 #define NUM_FOR_EDICT(e)	(((byte *)(e) - sv.edicts) / pr_edict_size)
 */
-edict_t *EDICT_NUM(int n);
-int NUM_FOR_EDICT(edict_t *e);
+edict_t *EDICT_NUM(int);
+int NUM_FOR_EDICT(edict_t*);
 
 #define	NEXT_EDICT(e)		((edict_t *)( (byte *)e + pr_edict_size))
 
@@ -119,8 +119,8 @@ int NUM_FOR_EDICT(edict_t *e);
 extern	int		type_size[8];
 
 typedef void (*builtin_t) (void);
-extern	builtin_t	*pr_builtins;
-extern	int		pr_numbuiltins;
+extern const builtin_t *pr_builtins;
+extern const int pr_numbuiltins;
 
 /* for 2021 re-release */
 typedef struct {
@@ -147,5 +147,4 @@ void ED_PrintNum (int ent);
 
 eval_t *GetEdictFieldValue(edict_t *ed, const char *field);
 
-#endif	/* _QUAKE_PROGS_H */
-
+#endif	/* QUAKE_PROGS_H */