diff --git a/curses_keys.h b/curses_keys.h
index 10bdf8b5fe..9cdaf69358 100644
--- a/curses_keys.h
+++ b/curses_keys.h
@@ -37,7 +37,7 @@
 
 #define CURSES_KEYS         KEY_MAX     /* KEY_MAX defined in <curses.h> */
 
-static int curses2keycode[CURSES_KEYS] = {
+static const int curses2keycode[CURSES_KEYS] = {
     [0 ... (CURSES_KEYS - 1)] = -1,
 
     [0x01b] = 1, /* Escape */
@@ -216,7 +216,7 @@ static int curses2keycode[CURSES_KEYS] = {
 
 };
 
-static int curses2keysym[CURSES_KEYS] = {
+static const int curses2keysym[CURSES_KEYS] = {
     [0 ... (CURSES_KEYS - 1)] = -1,
 
     ['\n'] = '\n',
@@ -244,7 +244,7 @@ typedef struct {
 	int keysym;
 } name2keysym_t;
 
-static name2keysym_t name2keysym[] = {
+static const name2keysym_t name2keysym[] = {
     /* Plain ASCII */
     { "space", 0x020 },
     { "exclam", 0x021 },
diff --git a/keymaps.c b/keymaps.c
index 15c40fadc1..38e50f0c07 100644
--- a/keymaps.c
+++ b/keymaps.c
@@ -24,7 +24,7 @@
 
 static int get_keysym(const char *name)
 {
-    name2keysym_t *p;
+    const name2keysym_t *p;
     for(p = name2keysym; p->name != NULL; p++) {
         if (!strcmp(p->name, name))
             return p->keysym;
diff --git a/sdl_keysym.h b/sdl_keysym.h
index 9a7414209f..c9087d75a7 100644
--- a/sdl_keysym.h
+++ b/sdl_keysym.h
@@ -2,7 +2,7 @@ typedef struct {
 	const char* name;
 	int keysym;
 } name2keysym_t;
-static name2keysym_t name2keysym[]={
+static const name2keysym_t name2keysym[]={
 /* ascii */
     { "space",                0x020},
     { "exclam",               0x021},
diff --git a/vnc_keysym.h b/vnc_keysym.h
index b6a172de9c..d1527ec02a 100644
--- a/vnc_keysym.h
+++ b/vnc_keysym.h
@@ -2,7 +2,7 @@ typedef struct {
 	const char* name;
 	int keysym;
 } name2keysym_t;
-static name2keysym_t name2keysym[]={
+static const name2keysym_t name2keysym[]={
 /* ascii */
     { "space",                0x020},
     { "exclam",               0x021},