diff --git a/docs/changelog.rst b/docs/changelog.rst
index 2773b581f..c0558ba19 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -82,6 +82,9 @@ Detailed list of changes
 - macOS: Persist "Secure Keyboard Entry" across restarts to match the behavior
   of Terminal.app (:iss:`4471`)
 
+- hints kitten: Fix common single letter extension files not being detected
+  (:iss:`4491`)
+
 
 0.24.1 [2022-01-06]
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/kittens/hints/main.py b/kittens/hints/main.py
index b69790325..8e35939ab 100644
--- a/kittens/hints/main.py
+++ b/kittens/hints/main.py
@@ -40,6 +40,8 @@ def kitty_common_opts() -> KittyCommonOpts:
 
 DEFAULT_HINT_ALPHABET = string.digits + string.ascii_lowercase
 DEFAULT_REGEX = r'(?m)^\s*(.+)\s*$'
+FILE_EXTENSION = r'\.(?:[a-zA-Z0-9]{2,7}|[ahcmo])(?!\.)'
+PATH_REGEX = fr'(?:\S*?/[\r\S]+)|(?:\S[\r\S]*{FILE_EXTENSION})\b'
 
 
 class Mark:
@@ -355,7 +357,7 @@ def functions_for(args: HintsCLIOptions) -> Tuple[str, List[PostprocessorFunc]]:
         )
         post_processors.append(url)
     elif args.type == 'path':
-        pattern = r'(?:\S*?/[\r\S]+)|(?:\S[\r\S]*\.[a-zA-Z0-9\r]{2,7})'
+        pattern = PATH_REGEX
         post_processors.extend((brackets, quotes))
     elif args.type == 'line':
         pattern = '(?m)^\\s*(.+)[\\s\0]*$'
@@ -412,7 +414,7 @@ def parse_input(text: str) -> str:
 def linenum_marks(text: str, args: HintsCLIOptions, Mark: Type[Mark], extra_cli_args: Sequence[str], *a: Any) -> Generator[Mark, None, None]:
     regex = args.regex
     if regex == DEFAULT_REGEX:
-        regex = r'(?P<path>(?:\S*/\S+?)|(?:\S+[.][a-zA-Z0-9]{2,7})):(?P<line>\d+)'
+        regex = fr'(?P<path>{PATH_REGEX}):(?P<line>\d+)'
     yield from mark(regex, [brackets, quotes], text, args)