diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index ea3d251..3763c12 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1317,14 +1317,12 @@ function install_get_localization_release($version = \Drupal::VERSION) {
 
   // This code assumes there is a first alpha available as "alpha1". For
   // Drupal 8.0.0 that isn't the case. In addition the semantic versioning
-  // wasn't introduse before "alpha13". However, we have already gotten to
+  // wasn't introduced before "alpha13". However, we have already gotten to
   // "beta1" so we are ignoring this for now.
-
-  // Check if the version is a regular stable release (no 'rc', 'beta',
-  // 'alpha', 'dev', etc.)
+  // Check if the version is a regular stable release (no 'rc', 'beta', 'alpha',
+  // 'dev', etc.)
   if (!isset($info['extra_text'])) {
     // The code below is relaxed - removing version duplicates at the end.
-
     // First version alternative: the current version.
     $alternatives[] = $version;
 
@@ -1352,8 +1350,7 @@ function install_get_localization_release($version = \Drupal::VERSION) {
   }
   else {
     // Below we assume that for all dev, alpha, beta or rc releases
-    // the patch level is 0. Modify code below and include $info['patch']
-    // if the assumption is wrong.
+    // the patch level is 0.
     switch ($info['extra_text']) {
       // Alpha release: current alpha or previous alpha release
       // (e.g. 8.0.0-alpha2 falls back to 8.0.0-alpha1).
@@ -1376,11 +1373,11 @@ function install_get_localization_release($version = \Drupal::VERSION) {
         }
         break;
 
-      // Dev release: The previous point release (e.g., 8.2.0-dev falls back
-      // to 8.1.0) or any unstable release (e.g., 8.0.0-dev falls back to
+      // Dev release: The previous point release (e.g., 8.2.0-dev falls back to
+      // 8.1.0) or any unstable release (e.g., 8.0.0-dev falls back to
       // 8.0.0-rc1, 8.0.0-beta1 or 8.0.0-alpha1).
       case 'dev':
-        if ($info['minor'] >= 1) {
+        if ($info['minor'] > 0) {
           $alternatives[] = $info['major'] . '.' . ($info['minor'] - 1) . '.0';
         }
         else {
@@ -1394,11 +1391,16 @@ function install_get_localization_release($version = \Drupal::VERSION) {
       // 8.0.0-rc2 falls back to 8.0.0-rc1) or the first beta release.
       case 'rc':
         $alternatives[] = $version;
-        if ($info['extra_number'] >= 2) {
+        if ($info['extra_number'] > 1) {
           $alternatives[] = $info['major'] . '.' . $info['minor'] . '.0-rc' . ($info['extra_number'] - 1);
         }
+        // Minor releases can have rc releases, but not beta or alpha.
+        if ($info['minor'] > 0) {
+          $alternatives[] = $info['major'] . '.' . ($info['minor'] - 1) . '.0';
+          $alternatives[] = $info['major'] . '.0.0';
+        }
         else {
-          $alternatives[] = $info['major'] . '.' . $info['minor'] . '.0-beta1';
+          $alternatives[] = $info['major'] . '.0.0-beta1';
         }
         break;
     }
diff --git a/core/modules/system/src/Tests/Installer/InstallerTranslationVersionUnitTest.php b/core/modules/system/src/Tests/Installer/InstallerTranslationVersionUnitTest.php
index 4da8a54..6fbd348 100644
--- a/core/modules/system/src/Tests/Installer/InstallerTranslationVersionUnitTest.php
+++ b/core/modules/system/src/Tests/Installer/InstallerTranslationVersionUnitTest.php
@@ -99,13 +99,21 @@ public function testVersionFallback() {
     $this->assertVersionFallback($version, $fallback);
 
     $version = '8.0.0-rc8';
-    $fallback = array('8.0.0-rc8', '8.0.0-rc7', '7.0');
+    $fallback = array('8.0.0-rc8', '8.0.0-rc7', '8.0.0-beta1', '7.0');
     $this->assertVersionFallback($version, $fallback);
 
     $version = '8.0.0-rc1';
     $fallback = array('8.0.0-rc1', '8.0.0-beta1', '7.0');
     $this->assertVersionFallback($version, $fallback);
 
+    $version = '8.2.0-rc1';
+    $fallback = array('8.2.0-rc1', '8.1.0', '8.0.0', '7.0');
+    $this->assertVersionFallback($version, $fallback);
+
+    $version = '8.2.0-rc2';
+    $fallback = array('8.2.0-rc2', '8.2.0-rc1', '8.1.0', '8.0.0', '7.0');
+    $this->assertVersionFallback($version, $fallback);
+
     $version = '8.0.0-foo2';
     $fallback = array('7.0');
     $this->assertVersionFallback($version, $fallback);