diff --git a/src/OpenIddict.Mvc/OpenIddictModelBinder.cs b/src/OpenIddict.Mvc/OpenIddictModelBinder.cs
index a05f33e6..4ca753d2 100644
--- a/src/OpenIddict.Mvc/OpenIddictModelBinder.cs
+++ b/src/OpenIddict.Mvc/OpenIddictModelBinder.cs
@@ -33,8 +33,8 @@ namespace OpenIddict.Mvc
                 if (request == null)
                 {
                     throw new InvalidOperationException("The OpenID Connect request cannot be retrieved from the ASP.NET context. " +
-                                                        "Make sure that 'app.UseOpenIddict()' is called before 'app.UseMvc()' and " +
-                                                        "that the action route corresponds to the endpoint path registered via " +
+                                                        "Make sure that 'app.UseAuthentication()' is called before 'app.UseMvc()' " +
+                                                        "and that the action route corresponds to the endpoint path registered via " +
                                                         "'services.AddOpenIddict().Enable[...]Endpoint(...)'.");
                 }
 
diff --git a/src/OpenIddict/OpenIddictProvider.Exchange.cs b/src/OpenIddict/OpenIddictProvider.Exchange.cs
index 16a89997..0b113dd4 100644
--- a/src/OpenIddict/OpenIddictProvider.Exchange.cs
+++ b/src/OpenIddict/OpenIddictProvider.Exchange.cs
@@ -226,7 +226,8 @@ namespace OpenIddict
                 var token = await Tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
                 if (token == null)
                 {
-                    Logger.LogError("The token request was rejected because the authorization code was no longer valid.");
+                    Logger.LogError("The token request was rejected because the authorization " +
+                                    "code '{Identifier}' was not found in the database.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -261,7 +262,8 @@ namespace OpenIddict
                         }
                     }
 
-                    Logger.LogError("The token request was rejected because the authorization code was already redeemed.");
+                    Logger.LogError("The token request was rejected because the authorization code " +
+                                    "'{Identifier}' has already been redeemed.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -272,7 +274,8 @@ namespace OpenIddict
 
                 else if (!await Tokens.IsValidAsync(token, context.HttpContext.RequestAborted))
                 {
-                    Logger.LogError("The token request was rejected because the authorization code was no longer valid.");
+                    Logger.LogError("The token request was rejected because the authorization code " +
+                                    "'{Identifier}' was no longer valid.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -291,7 +294,8 @@ namespace OpenIddict
                 var token = await Tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
                 if (token == null)
                 {
-                    Logger.LogError("The token request was rejected because the refresh token was already redeemed.");
+                    Logger.LogError("The token request was rejected because the refresh token " +
+                                    "'{Identifier}' was not found in the database.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -302,7 +306,8 @@ namespace OpenIddict
 
                 else if (await Tokens.IsRedeemedAsync(token, context.HttpContext.RequestAborted))
                 {
-                    Logger.LogError("The token request was rejected because the refresh token was no longer valid.");
+                    Logger.LogError("The token request was rejected because the refresh token " +
+                                    "'{Identifier}' has already been redeemed.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
@@ -313,7 +318,8 @@ namespace OpenIddict
 
                 else if (!await Tokens.IsValidAsync(token, context.HttpContext.RequestAborted))
                 {
-                    Logger.LogError("The token request was rejected because the refresh token was no longer valid.");
+                    Logger.LogError("The token request was rejected because the refresh token " +
+                                    "'{Identifier}' was no longer valid.", identifier);
 
                     context.Reject(
                         error: OpenIdConnectConstants.Errors.InvalidGrant,
diff --git a/src/OpenIddict/OpenIddictProvider.Introspection.cs b/src/OpenIddict/OpenIddictProvider.Introspection.cs
index 6e44d269..8bc6d3b8 100644
--- a/src/OpenIddict/OpenIddictProvider.Introspection.cs
+++ b/src/OpenIddict/OpenIddictProvider.Introspection.cs
@@ -129,8 +129,7 @@ namespace OpenIddict
                 var token = await Tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
                 if (token == null || !await Tokens.IsValidAsync(token, context.HttpContext.RequestAborted))
                 {
-                    Logger.LogInformation("The token {Identifier} was declared as inactive because " +
-                                          "it was revoked.", identifier);
+                    Logger.LogInformation("The token '{Identifier}' was declared as inactive because it was revoked.", identifier);
 
                     context.Active = false;
 
diff --git a/src/OpenIddict/OpenIddictProvider.Revocation.cs b/src/OpenIddict/OpenIddictProvider.Revocation.cs
index e86801cd..bfd00957 100644
--- a/src/OpenIddict/OpenIddictProvider.Revocation.cs
+++ b/src/OpenIddict/OpenIddictProvider.Revocation.cs
@@ -185,7 +185,8 @@ namespace OpenIddict
             var token = await Tokens.FindByIdAsync(identifier, context.HttpContext.RequestAborted);
             if (token == null || await Tokens.IsRevokedAsync(token, context.HttpContext.RequestAborted))
             {
-                Logger.LogInformation("The token '{Identifier}' was already revoked.", identifier);
+                Logger.LogInformation("The token '{Identifier}' was not revoked because " +
+                                      "it was already marked as invalid.", identifier);
 
                 context.Revoked = true;
 
diff --git a/test/OpenIddict.Mvc.Tests/OpenIddictModelBinderTests.cs b/test/OpenIddict.Mvc.Tests/OpenIddictModelBinderTests.cs
index 42f4182d..7b0cbc64 100644
--- a/test/OpenIddict.Mvc.Tests/OpenIddictModelBinderTests.cs
+++ b/test/OpenIddict.Mvc.Tests/OpenIddictModelBinderTests.cs
@@ -70,8 +70,8 @@ namespace OpenIddict.Mvc.Tests
             });
 
             Assert.Equal("The OpenID Connect request cannot be retrieved from the ASP.NET context. " +
-                         "Make sure that 'app.UseOpenIddict()' is called before 'app.UseMvc()' and " +
-                         "that the action route corresponds to the endpoint path registered via " +
+                         "Make sure that 'app.UseAuthentication()' is called before 'app.UseMvc()' " +
+                         "and that the action route corresponds to the endpoint path registered via " +
                          "'services.AddOpenIddict().Enable[...]Endpoint(...)'.", exception.Message);
         }