diff --git a/modules/lang/nim/config.el b/modules/lang/nim/config.el
index 3baaf0241..c848e5cbf 100644
--- a/modules/lang/nim/config.el
+++ b/modules/lang/nim/config.el
@@ -10,16 +10,26 @@ nimsuggest isn't installed."
       (nimsuggest-mode)))
   (add-hook 'nim-mode-hook #'+nim|init-nimsuggest-mode)
 
-  (defun doom*nimsuggest--get-dirty-dir ()
-    "The original `nimsuggest--get-dirty-dir' incorrectly extracts the frame
+  (when IS-WINDOWS
+    ;; TODO File PR/report upstream (https://github.com/nim-lang/nim-mode)
+    (defun doom*nimsuggest--get-dirty-dir ()
+      "The original `nimsuggest--get-dirty-dir' incorrectly extracts the frame
 number from the string representation of `selected-frame', which can contain
 characters that are illegal on Windows, causing invalid argument errors when
 `nimsuggest--make-tempdir' tries to use it."
-    (let* ((frame-str (format "%s" (selected-frame)))
-           (frame-num-str (if (string-match " \\(0x[0-9a-z]+\\)>$" frame-str)
-                              (match-string 1 frame-str))))
-      (file-name-as-directory (concat nimsuggest-dirty-directory frame-num-str))))
-  (advice-add #'nimsuggest--get-dirty-dir :override #'doom*nimsuggest--get-dirty-dir)
+      (let* ((frame-str (format "%s" (selected-frame)))
+             (frame-num-str (if (string-match " \\(0x[0-9a-z]+\\)>$" frame-str)
+                                (match-string 1 frame-str))))
+        (file-name-as-directory (concat nimsuggest-dirty-directory frame-num-str))))
+    (advice-add #'nimsuggest--get-dirty-dir :override #'doom*nimsuggest--get-dirty-dir)
+    
+    ;; TODO File PR/report upstream (https://github.com/nim-lang/nim-mode)
+    (defun doom*nimsuggest--get-temp-file-name (path)
+      "Removes invalid characters from the temp file path, including the unicode
+character that colon is replaced with, which is known to cause issues on
+windows."
+      (replace-regexp-in-string "[꞉* |<>\"?*]" "" path))
+    (advice-remove #'nimsuggest--get-temp-file-name :filter-return #'doom*nimsuggest--get-temp-file-name))
 
   (map! :map nim-mode-map
         :localleader