diff --git a/README.pod b/README.pod
index f81fefe..1cf79ab 100644
--- a/README.pod
+++ b/README.pod
@@ -122,7 +122,7 @@ Create a clickable area starting from the current position, when the area is cli
 
 Eg. I<%{A:reboot:} Click here to reboot %{A}>
 
-The I<button> field is optional, it defaults to the left button, and it's a number ranging from 1 to 5 which maps to the left, middle, right, scroll up and scroll down movements. Your mileage may vary.
+The I<button> field is optional, it defaults to the left button, and it's a number ranging from 1 to 9 which maps to the left, middle, right, scroll up, scroll down, scroll left, scroll right, 4th button (aka browser back), and 5th button (aka browser forward) movements (c.f. http://xahlee.info/linux/linux_x11_mouse_button_number.html). Your mileage may vary.
 
 Nested clickable areas can trigger different commands.
 
diff --git a/lemonbar.c b/lemonbar.c
index 029c675..454ca96 100644
--- a/lemonbar.c
+++ b/lemonbar.c
@@ -563,8 +563,8 @@ parse (char *text)
                     // Define input area.
                     case 'A': {
                         button = XCB_BUTTON_INDEX_1;
-                        // The range is 1-5
-                        if (isdigit(*p) && (*p > '0' && *p < '6'))
+                        // The range is 1-9
+                        if (isdigit(*p) && (*p > '0' && *p <= '9'))
                             button = *p++ - '0';
                         if (!area_add(p, block_end, &p, cur_mon, pos_x, align, button))
                             return;