diff --git a/lua/precognition/horizontal_motions.lua b/lua/precognition/horizontal_motions.lua
index cde6aa4..9b75318 100644
--- a/lua/precognition/horizontal_motions.lua
+++ b/lua/precognition/horizontal_motions.lua
@@ -132,11 +132,7 @@ function M.prev_word_boundary(str, cursorcol, linelen, big_word)
     while utils.char_class(char, big_word) == c_class and offset >= 0 do
         offset = offset - 1
         char = vim.fn.strcharpart(str, offset - 1, 1)
-        if char == "" then
-            -- Gone outside the line boundary, so break.
-            break
-        end
-        --if remaining string is whitespace, return nil_wrap
+        --if remaining string is whitespace, return 0
         local remaining = string.sub(str, offset)
         if remaining:match("^%s*$") and #remaining > 0 then
             return 0
diff --git a/tests/precognition/char_spec.lua b/tests/precognition/char_spec.lua
index 88f1b86..b1bbe36 100644
--- a/tests/precognition/char_spec.lua
+++ b/tests/precognition/char_spec.lua
@@ -9,6 +9,7 @@ describe("static classes", function()
         eq(cc.other, 1)
         eq(cc.word, 2)
         eq(cc.emoji, 3)
+        eq(cc.UNKNOWN, -1)
     end)
 end)