diff --git a/share/functions/prompt_pwd.fish b/share/functions/prompt_pwd.fish
index 31d10dee6..89d66b40e 100644
--- a/share/functions/prompt_pwd.fish
+++ b/share/functions/prompt_pwd.fish
@@ -45,7 +45,7 @@ function prompt_pwd --description 'short CWD for the prompt'
                 continue
             end
 
-            string join / (string replace -ar '(\.?[^/]{'"$fish_prompt_pwd_dir_length"'})[^/]*/' '$1/' $tmp) $full
+            string join / -- (string replace -ar -- '(\.?[^/]{'"$fish_prompt_pwd_dir_length"'})[^/]*/' '$1/' $tmp) $full
         end
     end
 end
diff --git a/tests/checks/prompt.fish b/tests/checks/prompt.fish
index d2ddf492a..a600dfff0 100644
--- a/tests/checks/prompt.fish
+++ b/tests/checks/prompt.fish
@@ -11,3 +11,6 @@ prompt_pwd -D 2 /usr/share/fish/tools/web_config/sample_prompts
 
 prompt_pwd -D 0 /usr/share/fish/tools/web_config/sample_prompts
 # CHECK: /u/s/f/t/w/s
+
+prompt_pwd -d1 -D 3 /usr/share/fish/tools/web_config/-sample_prompts
+# CHECK: /u/s/f/tools/web_config/-sample_prompts