diff --git a/backend/src/app/config.clj b/backend/src/app/config.clj
index 10bc7e4b7..e61d7dd49 100644
--- a/backend/src/app/config.clj
+++ b/backend/src/app/config.clj
@@ -84,7 +84,7 @@
    ;; a server prop key where initial project is stored.
    :initial-project-skey "initial-project"})
 
-(s/def ::flags ::us/vec-of-keywords)
+(s/def ::flags ::us/vec-of-valid-keywords)
 
 ;; DEPRECATED PROPERTIES
 (s/def ::telemetry-enabled ::us/boolean)
@@ -93,7 +93,7 @@
 (s/def ::audit-log-archive-uri ::us/string)
 (s/def ::audit-log-gc-max-age ::dt/duration)
 
-(s/def ::admins ::us/set-of-str)
+(s/def ::admins ::us/set-of-non-empty-strings)
 (s/def ::file-change-snapshot-every ::us/integer)
 (s/def ::file-change-snapshot-timeout ::dt/duration)
 
@@ -128,8 +128,8 @@
 (s/def ::oidc-token-uri ::us/string)
 (s/def ::oidc-auth-uri ::us/string)
 (s/def ::oidc-user-uri ::us/string)
-(s/def ::oidc-scopes ::us/set-of-str)
-(s/def ::oidc-roles ::us/set-of-str)
+(s/def ::oidc-scopes ::us/set-of-non-empty-strings)
+(s/def ::oidc-roles ::us/set-of-non-empty-strings)
 (s/def ::oidc-roles-attr ::us/keyword)
 (s/def ::oidc-email-attr ::us/keyword)
 (s/def ::oidc-name-attr ::us/keyword)
@@ -165,7 +165,7 @@
 (s/def ::profile-complaint-threshold ::us/integer)
 (s/def ::public-uri ::us/string)
 (s/def ::redis-uri ::us/string)
-(s/def ::registration-domain-whitelist ::us/set-of-str)
+(s/def ::registration-domain-whitelist ::us/set-of-non-empty-strings)
 (s/def ::rlimit-font ::us/integer)
 (s/def ::rlimit-file-update ::us/integer)
 (s/def ::rlimit-image ::us/integer)
diff --git a/backend/src/app/http/assets.clj b/backend/src/app/http/assets.clj
index 9061c436d..39a55c719 100644
--- a/backend/src/app/http/assets.clj
+++ b/backend/src/app/http/assets.clj
@@ -29,7 +29,7 @@
 
 (defn coerce-id
   [id]
-  (let [res (us/uuid-conformer id)]
+  (let [res (parse-uuid id)]
     (when-not (uuid? res)
       (ex/raise :type :not-found
                 :hint "object not found"))
diff --git a/backend/src/app/http/debug.clj b/backend/src/app/http/debug.clj
index 1b1002dce..11a29f892 100644
--- a/backend/src/app/http/debug.clj
+++ b/backend/src/app/http/debug.clj
@@ -9,7 +9,6 @@
   (:require
    [app.common.exceptions :as ex]
    [app.common.pprint :as pp]
-   [app.common.spec :as us]
    [app.common.uuid :as uuid]
    [app.config :as cf]
    [app.db :as db]
@@ -205,7 +204,7 @@
   [{:keys [pool]} request]
   (letfn [(parse-id [request]
             (let [id (get-in request [:path-params :id])
-                  id (us/uuid-conformer id)]
+                  id (parse-uuid id)]
               (when (uuid? id)
                 id)))
 
diff --git a/backend/src/app/rpc/mutations/teams.clj b/backend/src/app/rpc/mutations/teams.clj
index 4657a425a..7be2a96aa 100644
--- a/backend/src/app/rpc/mutations/teams.clj
+++ b/backend/src/app/rpc/mutations/teams.clj
@@ -353,7 +353,7 @@
 (declare create-team-invitation)
 
 (s/def ::email ::us/email)
-(s/def ::emails ::us/set-of-emails)
+(s/def ::emails ::us/set-of-valid-emails)
 (s/def ::invite-team-member
   (s/keys :req-un [::profile-id ::team-id ::role]
           :opt-un [::email ::emails]))
@@ -443,7 +443,7 @@
 
 ;; --- Mutation: Create Team & Invite Members
 
-(s/def ::emails ::us/set-of-emails)
+(s/def ::emails ::us/set-of-valid-emails)
 (s/def ::create-team-and-invite-members
   (s/and ::create-team (s/keys :req-un [::emails ::role])))
 
diff --git a/common/src/app/common/spec.cljc b/common/src/app/common/spec.cljc
index 0dfd68648..654270206 100644
--- a/common/src/app/common/spec.cljc
+++ b/common/src/app/common/spec.cljc
@@ -133,7 +133,7 @@
           (dm/str v))]
   (s/def ::rgb-color-str (s/conformer conformer unformer)))
 
-;; --- SPEC: set of Keywords
+;; --- SPEC: set/vec of valid Keywords
 
 (letfn [(conform-fn [dest s]
           (let [xform (keep (fn [s]
@@ -146,17 +146,17 @@
               (string? s) (into dest xform (str/words s))
               :else       ::s/invalid)))]
 
-  (s/def ::set-of-keywords
+  (s/def ::set-of-valid-keywords
     (s/conformer
      (fn [s] (conform-fn #{} s))
      (fn [s] (str/join " " (map name s)))))
 
-  (s/def ::vec-of-keywords
+  (s/def ::vec-of-valid-keywords
     (s/conformer
      (fn [s] (conform-fn [] s))
      (fn [s] (str/join " " (map name s))))))
 
-;; --- SPEC: set-of-emails
+;; --- SPEC: set-of-valid-emails
 
 (letfn [(conformer [v]
           (cond
@@ -171,9 +171,9 @@
             :else ::s/invalid))
         (unformer [v]
           (str/join " " v))]
-  (s/def ::set-of-emails (s/conformer conformer unformer)))
+  (s/def ::set-of-valid-emails (s/conformer conformer unformer)))
 
-;; --- SPEC: set-of-str
+;; --- SPEC: set-of-non-empty-strings
 
 (def non-empty-strings-xf
   (comp
@@ -189,7 +189,7 @@
             :else       ::s/invalid))
         (unformer [s]
           (str/join "," s))]
-  (s/def ::set-of-str (s/conformer conformer unformer)))
+  (s/def ::set-of-non-empty-strings (s/conformer conformer unformer)))
 
 ;; --- SPECS WITHOUT CONFORMER
 
@@ -200,7 +200,6 @@
 (s/def ::fn fn?)
 (s/def ::id ::uuid)
 
-;; NOTE: this is a coercerless version of `::set-of-str` spec
 (s/def ::set-of-string (s/every ::string :kind set?))
 (s/def ::coll-of-uuid (s/every ::uuid))
 (s/def ::set-of-uuid (s/every ::uuid :kind set?))
diff --git a/frontend/src/app/main/data/dashboard.cljs b/frontend/src/app/main/data/dashboard.cljs
index 51880b3b0..33dce462a 100644
--- a/frontend/src/app/main/data/dashboard.cljs
+++ b/frontend/src/app/main/data/dashboard.cljs
@@ -452,9 +452,9 @@
 
 (defn invite-team-members
   [{:keys [emails role team-id resend?] :as params}]
-  (us/assert ::us/set-of-emails emails)
-  (us/assert ::us/keyword role)
-  (us/assert ::us/uuid team-id)
+  (us/assert! ::us/set-of-valid-emails emails)
+  (us/assert! ::us/keyword role)
+  (us/assert! ::us/uuid team-id)
   (ptk/reify ::invite-team-members
     IDeref
     (-deref [_] {:role role :team-id team-id :resend? resend?})
diff --git a/frontend/src/app/main/ui/dashboard/team.cljs b/frontend/src/app/main/ui/dashboard/team.cljs
index 939b6e2d1..4281a8219 100644
--- a/frontend/src/app/main/ui/dashboard/team.cljs
+++ b/frontend/src/app/main/ui/dashboard/team.cljs
@@ -77,7 +77,7 @@
         ]
        (filterv identity)))
 
-(s/def ::emails (s/and ::us/set-of-emails d/not-empty?))
+(s/def ::emails (s/and ::us/set-of-valid-emails d/not-empty?))
 (s/def ::role  ::us/keyword)
 (s/def ::team-id ::us/uuid)
 
diff --git a/frontend/src/app/main/ui/onboarding/team_choice.cljs b/frontend/src/app/main/ui/onboarding/team_choice.cljs
index 55c5f56b8..944e074aa 100644
--- a/frontend/src/app/main/ui/onboarding/team_choice.cljs
+++ b/frontend/src/app/main/ui/onboarding/team_choice.cljs
@@ -96,7 +96,7 @@
   [{:value "editor" :label (tr "labels.editor")}
    {:value "admin" :label (tr "labels.admin")}])
 
-(s/def ::emails (s/and ::us/set-of-emails d/not-empty?))
+(s/def ::emails (s/and ::us/set-of-valid-emails d/not-empty?))
 (s/def ::role  ::us/keyword)
 (s/def ::invite-form
   (s/keys :req-un [::role ::emails]))
@@ -180,10 +180,10 @@
          [:div.action (tr "onboarding.choice.team-up.invite-members-skip")]]]]
       [:& team-modal-right]
       [:div.paginator "2/2"]
-      
+
       [:img.deco.square {:src "images/deco-square.svg" :border "0"}]
       [:img.deco.circle {:src "images/deco-circle.svg" :border "0"}]
       [:img.deco.line1 {:src "images/deco-line1.svg" :border "0"}]
       [:img.deco.line2 {:src "images/deco-line2.svg" :border "0"}]]]))
-      
+