diff --git a/INSTALL.md b/INSTALL.md
index ff7df87e7..3253c4fbd 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -47,7 +47,7 @@ cpanm IO::Uncompress::Gunzip
 
 Backrest can be installed by downloading the most recent release:
 
-https://github.com/dwsteele/pg_backrest/releases
+https://github.com/pgmasters/backrest/releases
 
 6. To run unit tests:
 
diff --git a/lib/BackRest/Backup.pm b/lib/BackRest/Backup.pm
index 31dc39f77..e4a7ae041 100644
--- a/lib/BackRest/Backup.pm
+++ b/lib/BackRest/Backup.pm
@@ -1437,16 +1437,28 @@ sub backup
         # will not be attempted.
         eval
         {
+            # Load the aborted manifest
             my %oAbortedManifest;
             config_load("${strBackupTmpPath}/backup.manifest", \%oAbortedManifest);
 
-            if (defined($oAbortedManifest{backup}{type}) && defined($oBackupManifest{backup}{type}) &&
-                defined($oAbortedManifest{backup}{prior}) && defined($oBackupManifest{backup}{prior}) &&
-                defined($oAbortedManifest{backup}{version}) && defined($oBackupManifest{backup}{version}))
+            # Default values if they are not set
+            my $strAbortedType = defined($oAbortedManifest{backup}{type}) ?
+                defined($oAbortedManifest{backup}{type}) : '<invalid>';
+            my $strAbortedPrior = defined($oAbortedManifest{backup}{prior}) ?
+                defined($oAbortedManifest{backup}{prior}) : '<invalid>';
+            my $strAbortedVersion = defined($oAbortedManifest{backup}{version}) ?
+                defined($oAbortedManifest{backup}{version}) : '<invalid>';
+
+            # The backup is usable if between the current backup and the aborted backup:
+            # 1) The version matches
+            # 2) The type of both is full or the types match and prior matches
+            if ($strAbortedVersion eq $oBackupManifest{backup}{version})
             {
-                if ($oAbortedManifest{backup}{type} eq $oBackupManifest{backup}{type} &&
-                    $oAbortedManifest{backup}{prior} eq $oBackupManifest{backup}{prior} &&
-                    $oAbortedManifest{backup}{version} eq $oBackupManifest{backup}{version})
+                if ($strAbortedType eq BACKUP_TYPE_FULL && $oBackupManifest{backup}{type} eq BACKUP_TYPE_FULL)
+                {
+                    $bUsable = true;
+                }
+                elsif ($strAbortedType eq $oBackupManifest{backup}{type} && $strAbortedPrior eq $oBackupManifest{backup}{prior})
                 {
                     $bUsable = true;
                 }
diff --git a/test/lib/BackRestTest/BackupTest.pm b/test/lib/BackRestTest/BackupTest.pm
index 10462ab1e..f933d7c9a 100755
--- a/test/lib/BackRestTest/BackupTest.pm
+++ b/test/lib/BackRestTest/BackupTest.pm
@@ -530,8 +530,22 @@ sub BackRestTestBackup_Test
         }
     }
 
+    #-------------------------------------------------------------------------------------------------------------------------------
+    # Test backup
+    #
+    # Check the backup and restore functionality using synthetic data.
+    #-------------------------------------------------------------------------------------------------------------------------------
+
+    #-------------------------------------------------------------------------------------------------------------------------------
+    # Test aborted
+    #
+    # Check the aborted backup functionality using synthetic data.
+    #-------------------------------------------------------------------------------------------------------------------------------
+
     #-------------------------------------------------------------------------------------------------------------------------------
     # Test full
+    #
+    # Check the entire backup mechanism using actual clusters.
     #-------------------------------------------------------------------------------------------------------------------------------
     if ($strTest eq 'all' || $strTest eq 'full')
     {