diff --git a/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php b/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
index 065e1b4fbcd7..0cfcf6517bb9 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
@@ -383,8 +383,10 @@ public function withAggregate($relations, $column, $function = null)
             $relation = $this->getRelationWithoutConstraints($name);
 
             if ($function) {
+                $predictedColumn = $this->getQuery()->from === $relation->getQuery()->getQuery()->from ? "{$relation->getRelationCountHash(true)}.$column" : $column;
+
                 $expression = sprintf('%s(%s)', $function, $this->getQuery()->getGrammar()->wrap(
-                    $column === '*' ? $column : $relation->getRelated()->qualifyColumn($column)
+                    $column === '*' ? $column : $relation->getRelated()->qualifyColumn($predictedColumn)
                 ));
             } else {
                 $expression = $column;
diff --git a/src/Illuminate/Database/Eloquent/Relations/BelongsTo.php b/src/Illuminate/Database/Eloquent/Relations/BelongsTo.php
index 664f2b8e8049..e438d8854490 100755
--- a/src/Illuminate/Database/Eloquent/Relations/BelongsTo.php
+++ b/src/Illuminate/Database/Eloquent/Relations/BelongsTo.php
@@ -282,11 +282,12 @@ public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder
     /**
      * Get a relationship join table hash.
      *
+     * @param  bool $lockCount
      * @return string
      */
-    public function getRelationCountHash()
+    public function getRelationCountHash($lockCount = false)
     {
-        return 'laravel_reserved_'.static::$selfJoinCount++;
+        return 'laravel_reserved_'.($lockCount ? static::$selfJoinCount : static::$selfJoinCount++);
     }
 
     /**
diff --git a/src/Illuminate/Database/Eloquent/Relations/BelongsToMany.php b/src/Illuminate/Database/Eloquent/Relations/BelongsToMany.php
index b54340ec2559..ae82ac02ddce 100755
--- a/src/Illuminate/Database/Eloquent/Relations/BelongsToMany.php
+++ b/src/Illuminate/Database/Eloquent/Relations/BelongsToMany.php
@@ -1170,11 +1170,12 @@ public function getExistenceCompareKey()
     /**
      * Get a relationship join table hash.
      *
+     * @param  bool $lockCount
      * @return string
      */
-    public function getRelationCountHash()
+    public function getRelationCountHash($lockCount = false)
     {
-        return 'laravel_reserved_'.static::$selfJoinCount++;
+        return 'laravel_reserved_'.($lockCount ? static::$selfJoinCount : static::$selfJoinCount++);
     }
 
     /**
diff --git a/src/Illuminate/Database/Eloquent/Relations/HasManyThrough.php b/src/Illuminate/Database/Eloquent/Relations/HasManyThrough.php
index b0b568b25f01..7d5008d782c2 100644
--- a/src/Illuminate/Database/Eloquent/Relations/HasManyThrough.php
+++ b/src/Illuminate/Database/Eloquent/Relations/HasManyThrough.php
@@ -599,11 +599,12 @@ public function getRelationExistenceQueryForThroughSelfRelation(Builder $query,
     /**
      * Get a relationship join table hash.
      *
+     * @param  bool $lockCount
      * @return string
      */
-    public function getRelationCountHash()
+    public function getRelationCountHash($lockCount = false)
     {
-        return 'laravel_reserved_'.static::$selfJoinCount++;
+        return 'laravel_reserved_'.($lockCount ? static::$selfJoinCount : static::$selfJoinCount++);
     }
 
     /**
diff --git a/src/Illuminate/Database/Eloquent/Relations/HasOneOrMany.php b/src/Illuminate/Database/Eloquent/Relations/HasOneOrMany.php
index acff8314640e..18dc09094886 100755
--- a/src/Illuminate/Database/Eloquent/Relations/HasOneOrMany.php
+++ b/src/Illuminate/Database/Eloquent/Relations/HasOneOrMany.php
@@ -366,11 +366,12 @@ public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder
     /**
      * Get a relationship join table hash.
      *
+     * @param  bool $lockCount
      * @return string
      */
-    public function getRelationCountHash()
+    public function getRelationCountHash($lockCount = false)
     {
-        return 'laravel_reserved_'.static::$selfJoinCount++;
+        return 'laravel_reserved_'.($lockCount ? static::$selfJoinCount : static::$selfJoinCount++);
     }
 
     /**