diff --git a/src/Recyclarr.Common/Extensions/CollectionExtensions.cs b/src/Recyclarr.Common/Extensions/CollectionExtensions.cs
index 241b5815..56e023c8 100644
--- a/src/Recyclarr.Common/Extensions/CollectionExtensions.cs
+++ b/src/Recyclarr.Common/Extensions/CollectionExtensions.cs
@@ -39,22 +39,17 @@ public static class CollectionExtensions
         return observable.Where(x => x is not null).Select(x => x!);
     }
 
-    public static bool Empty<T>(this ICollection<T>? collection)
+    public static bool IsEmpty<T>(this ICollection<T>? collection)
     {
         return collection is null or {Count: 0};
     }
 
-    public static bool Empty<T>(this IReadOnlyCollection<T>? collection)
+    public static bool IsEmpty<T>(this IReadOnlyCollection<T>? collection)
     {
         return collection is null or {Count: 0};
     }
 
-    public static bool NotEmpty<T>(this ICollection<T>? collection)
-    {
-        return collection is {Count: > 0};
-    }
-
-    public static bool NotEmpty<T>(this IReadOnlyCollection<T>? collection)
+    public static bool IsNotEmpty<T>(this ICollection<T>? collection)
     {
         return collection is {Count: > 0};
     }
diff --git a/src/Recyclarr.TrashLib/Services/Sonarr/Capabilities/SonarrCapabilityEnforcer.cs b/src/Recyclarr.TrashLib/Services/Sonarr/Capabilities/SonarrCapabilityEnforcer.cs
index 021385a7..e43b0fc9 100644
--- a/src/Recyclarr.TrashLib/Services/Sonarr/Capabilities/SonarrCapabilityEnforcer.cs
+++ b/src/Recyclarr.TrashLib/Services/Sonarr/Capabilities/SonarrCapabilityEnforcer.cs
@@ -30,12 +30,12 @@ public class SonarrCapabilityEnforcer
 
         switch (capabilities.SupportsCustomFormats)
         {
-            case true when config.ReleaseProfiles.NotEmpty():
+            case true when config.ReleaseProfiles.IsNotEmpty():
                 throw new ServiceIncompatibilityException(
                     "Release profiles require Sonarr v3. " +
                     "Please use `custom_formats` instead or use the right version of Sonarr.");
 
-            case false when config.CustomFormats.NotEmpty():
+            case false when config.CustomFormats.IsNotEmpty():
                 throw new ServiceIncompatibilityException(
                     "Custom formats require Sonarr v4 or greater. " +
                     "Please use `release_profiles` instead or use the right version of Sonarr.");
diff --git a/src/Recyclarr.TrashLib/Services/Sonarr/Config/SonarrConfigurationValidator.cs b/src/Recyclarr.TrashLib/Services/Sonarr/Config/SonarrConfigurationValidator.cs
index dccd9dd8..ec698d7e 100644
--- a/src/Recyclarr.TrashLib/Services/Sonarr/Config/SonarrConfigurationValidator.cs
+++ b/src/Recyclarr.TrashLib/Services/Sonarr/Config/SonarrConfigurationValidator.cs
@@ -12,7 +12,7 @@ public class SonarrConfigurationValidator : AbstractValidator<SonarrConfiguratio
     {
         RuleForEach(x => x.ReleaseProfiles)
             .Empty()
-            .When(x => x.CustomFormats.NotEmpty())
+            .When(x => x.CustomFormats.IsNotEmpty())
             .WithMessage("`custom_formats` and `release_profiles` may not be used together");
 
         RuleForEach(x => x.ReleaseProfiles).SetValidator(new ReleaseProfileConfigValidator());