diff --git a/circe-color-nicks.el b/circe-color-nicks.el
index dd5e64e0..f8d5571e 100644
--- a/circe-color-nicks.el
+++ b/circe-color-nicks.el
@@ -81,18 +81,22 @@ See `enable-circe-color-nicks'."
 recommended is 7:1, or at least 4.5:1 (7 stands for 7:1 here).
 Lower value allows higher color spread, but could lead to less
 readability."
+  :type 'number
   :group 'circe-color-nicks)
 
 (defcustom circe-color-nicks-min-difference 17
   "Minimum difference from each other for generated colors."
+  :type 'integer
   :group 'circe-color-nicks)
 
 (defcustom circe-color-nicks-min-fg-difference 17
   "Minimum difference from foreground for generated colors."
+  :type 'integer
   :group 'circe-color-nicks)
 
 (defcustom circe-color-nicks-min-my-message-difference 0
   "Minimum difference from own nick color for generated colors."
+  :type 'integer
   :group 'circe-color-nicks)
 
 (defcustom circe-color-nicks-everywhere nil
diff --git a/circe-display-images.el b/circe-display-images.el
index 6c9e29a2..a9f09629 100644
--- a/circe-display-images.el
+++ b/circe-display-images.el
@@ -77,21 +77,25 @@ See `enable-circe-display-images'."
   "\\(https?:\/\/[^ ]*?\.\\\(?:png\\|jpg\\|jpeg\\|svg\\|gif\\)\\)"
   "Regex used to find images in channel messages. This regex needs to be
 greedy to match multiple images on the same line."
-  :group 'circe-display-images)
+  :group 'circe-display-images
+  :type 'string)
 
 (defcustom circe-display-images-max-height 400
   "The image's maximum allowed height. Images will be scaled down if they
 are larger than this"
-  :group 'circe-display-images)
+  :group 'circe-display-images
+  :type 'integer)
 
 (defcustom circe-display-images-background nil
   "Background used for the images background, if image supports transparency.
 Defaults to the frame's background color."
-  :group 'circe-display-images)
+  :group 'circe-display-images
+  :type 'string)
 
 (defcustom circe-display-images-animate-gifs nil
   "Animate any gifs that are displayed. This might slow down Emacs."
-  :group 'circe-display-images)
+  :group 'circe-display-images
+  :type 'boolean)
 
 (defvar-local circe-display-images-text-property-map (make-hash-table
                                                       :test 'equal)