diff --git a/src/Fl_Tree_Prefs.cxx b/src/Fl_Tree_Prefs.cxx
index 3fc9c4355..fc8ba08f7 100644
--- a/src/Fl_Tree_Prefs.cxx
+++ b/src/Fl_Tree_Prefs.cxx
@@ -28,7 +28,7 @@
 // INTERNAL: BUILT IN OPEN/STOW XPMS
 //    These can be replaced via prefs.openicon()/closeicon()
 //
-static const char *L_open_xpm[] = {
+static const char * const L_open_xpm[] = {
 #ifdef __APPLE__
   "11 11 2 1",
   ".  c None",
@@ -64,7 +64,7 @@ static const char *L_open_xpm[] = {
 };
 static Fl_Pixmap L_openpixmap(L_open_xpm);
 
-static const char *L_close_xpm[] = {
+static const char * const L_close_xpm[] = {
 #ifdef __APPLE__
   "11 11 2 1",
   ".  c None",
diff --git a/src/fl_cursor_help.xpm b/src/fl_cursor_help.xpm
index 972c82fb6..2c219833c 100644
--- a/src/fl_cursor_help.xpm
+++ b/src/fl_cursor_help.xpm
@@ -1,5 +1,5 @@
 /* XPM */
-static const char * fl_cursor_help_xpm[] = {
+static const char * const fl_cursor_help_xpm[] = {
 "16 27 9 1",
 " 	c None",
 ".	c #FFFFFF",
diff --git a/src/fl_cursor_nesw.xpm b/src/fl_cursor_nesw.xpm
index 5a7113a9e..4fbdcc9fa 100644
--- a/src/fl_cursor_nesw.xpm
+++ b/src/fl_cursor_nesw.xpm
@@ -1,5 +1,5 @@
 /* XPM */
-static const char * fl_cursor_nesw_xpm[] = {
+static const char * const fl_cursor_nesw_xpm[] = {
 "15 15 28 1",
 " 	c None",
 ".	c #FFFFFF",
diff --git a/src/fl_cursor_none.xpm b/src/fl_cursor_none.xpm
index 054e461d2..fb53c6da8 100644
--- a/src/fl_cursor_none.xpm
+++ b/src/fl_cursor_none.xpm
@@ -1,5 +1,5 @@
 /* XPM */
-static const char * fl_cursor_none_xpm[] = {
+static const char * const fl_cursor_none_xpm[] = {
 "15 15 1 1",
 " 	c None",
 "               ",
diff --git a/src/fl_cursor_nwse.xpm b/src/fl_cursor_nwse.xpm
index d495eb4ff..f5e4ebb1f 100644
--- a/src/fl_cursor_nwse.xpm
+++ b/src/fl_cursor_nwse.xpm
@@ -1,5 +1,5 @@
 /* XPM */
-static const char * fl_cursor_nwse_xpm[] = {
+static const char * const fl_cursor_nwse_xpm[] = {
 "15 15 28 1",
 " 	c None",
 ".	c #FFFFFF",
diff --git a/src/fl_cursor_wait.xpm b/src/fl_cursor_wait.xpm
index 3aa6df631..da027844d 100644
--- a/src/fl_cursor_wait.xpm
+++ b/src/fl_cursor_wait.xpm
@@ -1,5 +1,5 @@
 /* XPM */
-static const char *fl_cursor_wait_xpm[] = {
+static const char * const fl_cursor_wait_xpm[] = {
 /* width height ncolors chars_per_pixel */
 "13 18 3 1",
 /* colors */
diff --git a/src/tile.xpm b/src/tile.xpm
index 872e0f70c..1fa410c74 100644
--- a/src/tile.xpm
+++ b/src/tile.xpm
@@ -4,7 +4,7 @@ static char	tile_cmap[3][32] = {
 "o c #EFEFEF",
 ". c #E8E8E8"
 };
-static const char * tile_xpm[] = {
+static const char * const tile_xpm[] = {
 "64 64 3 1",
 tile_cmap[0],
 tile_cmap[1],