diff --git a/src/gtk/cross.xbm b/src/gtk/cross.xbm
index 916ee76e3a..2930c572e4 100644
--- a/src/gtk/cross.xbm
+++ b/src/gtk/cross.xbm
@@ -1,6 +1,6 @@
-#define cross_width 15
-#define cross_height 15
+#define cross_width 16
+#define cross_height 16
 static unsigned char cross_bits[] = {
-   0x84, 0x10, 0x84, 0x10, 0xff, 0x7f, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
-   0x84, 0x10, 0xff, 0x7f, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
-   0xff, 0x7f, 0x84, 0x10, 0x84, 0x10};
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0xFF, 0xFF, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0xFF, 0xFF,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, };
diff --git a/src/gtk/horiz.xbm b/src/gtk/horiz.xbm
index f4a31c6e9d..94de3f9dcf 100644
--- a/src/gtk/horiz.xbm
+++ b/src/gtk/horiz.xbm
@@ -1,6 +1,6 @@
-#define horiz_width 15
-#define horiz_height 15
+#define horiz_width 16
+#define horiz_height 16
 static unsigned char horiz_bits[] = {
-   0x00, 0x00, 0x00, 0x00, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-   0x00, 0x00, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-   0xff, 0x7f, 0x00, 0x00, 0x00, 0x00};
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, };
diff --git a/src/gtk/verti.xbm b/src/gtk/verti.xbm
index b71941e82e..c06305d6fd 100644
--- a/src/gtk/verti.xbm
+++ b/src/gtk/verti.xbm
@@ -1,6 +1,6 @@
-#define verti_width 15
-#define verti_height 15
+#define verti_width 16
+#define verti_height 16
 static unsigned char verti_bits[] = {
-   0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
-   0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
-   0x84, 0x10, 0x84, 0x10, 0x84, 0x10};
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+  0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, };