diff --git a/src/NzbDrone.Core/ImportLists/Custom/CustomImportProxy.cs b/src/NzbDrone.Core/ImportLists/Custom/CustomImportProxy.cs
index 6c62b2c3d..8b7cfeb67 100644
--- a/src/NzbDrone.Core/ImportLists/Custom/CustomImportProxy.cs
+++ b/src/NzbDrone.Core/ImportLists/Custom/CustomImportProxy.cs
@@ -55,7 +55,7 @@ namespace NzbDrone.Core.ImportLists.Custom
             catch (Exception ex)
             {
                 _logger.Error(ex, "Unable to connect to import list.");
-                return new ValidationFailure(string.Empty, "Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
+                return new ValidationFailure(string.Empty, $"Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
             }
 
             return null;
diff --git a/src/NzbDrone.Core/ImportLists/HttpImportListBase.cs b/src/NzbDrone.Core/ImportLists/HttpImportListBase.cs
index 67a172a99..1936ced7d 100644
--- a/src/NzbDrone.Core/ImportLists/HttpImportListBase.cs
+++ b/src/NzbDrone.Core/ImportLists/HttpImportListBase.cs
@@ -233,13 +233,13 @@ namespace NzbDrone.Core.ImportLists
             {
                 _logger.Warn(ex, "Unable to connect to import list");
 
-                return new ValidationFailure(string.Empty, "Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
+                return new ValidationFailure(string.Empty, $"Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
             }
             catch (Exception ex)
             {
                 _logger.Warn(ex, "Unable to connect to import list");
 
-                return new ValidationFailure(string.Empty, "Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
+                return new ValidationFailure(string.Empty, $"Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
             }
 
             return null;
diff --git a/src/NzbDrone.Core/ImportLists/Sonarr/SonarrV3Proxy.cs b/src/NzbDrone.Core/ImportLists/Sonarr/SonarrV3Proxy.cs
index 128776175..7e4bcdbb2 100644
--- a/src/NzbDrone.Core/ImportLists/Sonarr/SonarrV3Proxy.cs
+++ b/src/NzbDrone.Core/ImportLists/Sonarr/SonarrV3Proxy.cs
@@ -64,12 +64,12 @@ namespace NzbDrone.Core.ImportLists.Sonarr
                 }
 
                 _logger.Error(ex, "Unable to connect to import list.");
-                return new ValidationFailure(string.Empty, "Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
+                return new ValidationFailure(string.Empty, $"Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
             }
             catch (Exception ex)
             {
                 _logger.Error(ex, "Unable to connect to import list.");
-                return new ValidationFailure(string.Empty, "Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
+                return new ValidationFailure(string.Empty, $"Unable to connect to import list: {ex.Message}. Check the log surrounding this error for details.");
             }
 
             return null;
diff --git a/src/NzbDrone.Core/Indexers/HttpIndexerBase.cs b/src/NzbDrone.Core/Indexers/HttpIndexerBase.cs
index a092a9778..5c0594013 100644
--- a/src/NzbDrone.Core/Indexers/HttpIndexerBase.cs
+++ b/src/NzbDrone.Core/Indexers/HttpIndexerBase.cs
@@ -389,7 +389,7 @@ namespace NzbDrone.Core.Indexers
             {
                 _logger.Warn(ex, "Unable to connect to indexer");
 
-                return new ValidationFailure(string.Empty, "Unable to connect to indexer: {ex.Message}. Check the log surrounding this error for details");
+                return new ValidationFailure(string.Empty, $"Unable to connect to indexer: {ex.Message}. Check the log surrounding this error for details");
             }
 
             return null;
diff --git a/src/NzbDrone.Core/Indexers/Newznab/Newznab.cs b/src/NzbDrone.Core/Indexers/Newznab/Newznab.cs
index a8b16a0c3..79115bd26 100644
--- a/src/NzbDrone.Core/Indexers/Newznab/Newznab.cs
+++ b/src/NzbDrone.Core/Indexers/Newznab/Newznab.cs
@@ -134,7 +134,7 @@ namespace NzbDrone.Core.Indexers.Newznab
             {
                 _logger.Warn(ex, "Unable to connect to indexer: " + ex.Message);
 
-                return new ValidationFailure(string.Empty, "Unable to connect to indexer: {ex.Message}. Check the log surrounding this error for details");
+                return new ValidationFailure(string.Empty, $"Unable to connect to indexer: {ex.Message}. Check the log surrounding this error for details");
             }
         }
 
diff --git a/src/NzbDrone.Core/Indexers/Torznab/Torznab.cs b/src/NzbDrone.Core/Indexers/Torznab/Torznab.cs
index b1cfb87e9..48d6386b5 100644
--- a/src/NzbDrone.Core/Indexers/Torznab/Torznab.cs
+++ b/src/NzbDrone.Core/Indexers/Torznab/Torznab.cs
@@ -126,7 +126,7 @@ namespace NzbDrone.Core.Indexers.Torznab
             {
                 _logger.Warn(ex, "Unable to connect to indexer: " + ex.Message);
 
-                return new ValidationFailure(string.Empty, "Unable to connect to indexer: {ex.Message}. Check the log surrounding this error for details");
+                return new ValidationFailure(string.Empty, $"Unable to connect to indexer: {ex.Message}. Check the log surrounding this error for details");
             }
         }
 
diff --git a/src/NzbDrone.Core/Notifications/Notifiarr/NotifiarrProxy.cs b/src/NzbDrone.Core/Notifications/Notifiarr/NotifiarrProxy.cs
index 382253bcd..aad2fc8ac 100644
--- a/src/NzbDrone.Core/Notifications/Notifiarr/NotifiarrProxy.cs
+++ b/src/NzbDrone.Core/Notifications/Notifiarr/NotifiarrProxy.cs
@@ -57,7 +57,7 @@ namespace NzbDrone.Core.Notifications.Notifiarr
             catch (Exception ex)
             {
                 _logger.Error(ex, ex.Message);
-                return new ValidationFailure(string.Empty, "Unable to send test notification: {ex.Message}. Check the log surrounding this error for details");
+                return new ValidationFailure(string.Empty, "$Unable to send test notification: {ex.Message}. Check the log surrounding this error for details");
             }
         }