diff --git a/modules/home/services/cliphist.nix b/modules/home/services/cliphist.nix
index 43f7baf..f12b310 100644
--- a/modules/home/services/cliphist.nix
+++ b/modules/home/services/cliphist.nix
@@ -10,7 +10,7 @@
   config = lib.mkIf config.custom.services.cliphist.enable {
     assertions = lib.singleton {
       assertion = config.custom.programs.rofi.enable;
-      message = "Cliphist requires Rofi.";
+      message = "Cliphist requires Rofi";
     };
 
     services.cliphist = {
diff --git a/modules/system/services/syncthing.nix b/modules/system/services/syncthing.nix
index c6a37e0..291f5b9 100644
--- a/modules/system/services/syncthing.nix
+++ b/modules/system/services/syncthing.nix
@@ -41,11 +41,11 @@ in
     assertions = [
       {
         assertion = config.custom.services.tailscale.enable;
-        message = "Syncthing requires tailscale.";
+        message = "Syncthing requires tailscale";
       }
       {
         assertion = cfg.isServer -> (cfg.gui.domain != null);
-        message = "Running syncthing on a server requires `gui.domain` to be set.";
+        message = "Running syncthing on a server requires `gui.domain` to be set";
       }
       {
         assertion = (cfg.gui.domain != null) -> (lib'.isTailscaleDomain cfg.gui.domain);
diff --git a/modules/system/web-services/alloy.nix b/modules/system/web-services/alloy.nix
index 6f86211..9694795 100644
--- a/modules/system/web-services/alloy.nix
+++ b/modules/system/web-services/alloy.nix
@@ -51,14 +51,14 @@ in
           |> lib.filter (name: name != "system")
           |> lib.map (name: {
             assertion = cfg.collect.metrics.${name} -> config.services.${name}.enable;
-            message = "Collecting ${name} metrics requires the ${name} service to be enabled.";
+            message = "Collecting ${name} metrics requires the ${name} service to be enabled";
           });
         logsAssertions =
           cfg.collect.logs
           |> lib.attrNames
           |> lib.map (name: {
             assertion = cfg.collect.logs.${name} -> config.services.${name}.enable;
-            message = "Collecting ${name} logs requires the ${name} service to be enabled.";
+            message = "Collecting ${name} logs requires the ${name} service to be enabled";
           });
       in
       metricsAssertions ++ logsAssertions;