diff --git a/modules/core.vim b/modules/core.vim
index c06a196..6ed7a11 100644
--- a/modules/core.vim
+++ b/modules/core.vim
@@ -108,8 +108,6 @@ nnoremap <leader>h  :bprevious<cr>
 
 nnoremap <leader>cd :lcd %:p:h<cr>:pwd<cr>
 
-nnoremap 0 ^
-vnoremap 0 ^
 nnoremap gV `[v`]
 
 cnoremap <C-p> <Up>
diff --git a/scripts/test.sh b/scripts/test.sh
index c2eadf1..dee1c92 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -201,6 +201,10 @@ check_vim() {
     grep -Fq 'LSP actions are buffer-local and start after a server attaches.' "$TMP_ROOT/status-default.txt"
     grep -Fq 'Open that filetype and run :LspInstallServer once.' "$TMP_ROOT/status-default.txt"
 
+    XDG_CONFIG_HOME="$EMPTY_XDG" vim -u .vimrc -i NONE -es -N \
+        -c 'if maparg("0", "n") !=# "" || maparg("0", "v") !=# "" | cquit | endif' \
+        -c 'qa!' 2>&1
+
     XDG_CONFIG_HOME="$EMPTY_XDG" vim -u .vimrc -i NONE -es -N \
         -c 'silent! delcommand LspStatus' \
         -c 'silent! delcommand LspInstallServer' \