diff --git a/src/Php/CompilerBase.php b/src/Php/CompilerBase.php
index 35c5bacf..4aeb0691 100644
--- a/src/Php/CompilerBase.php
+++ b/src/Php/CompilerBase.php
@@ -2045,6 +2045,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         $var          = $this->parseIdentifier($node->var);
         $expr         = $this->parseIdentifier($node->expr);
         $leftExprType = $node->var->getType();
+
         if ($this->isVarExpr($node->var)) {
             if (!$this->hasVar($var)) {
                 $this->fatalError($node->var, 'Cannot assign to undefined variable');
@@ -2055,16 +2056,15 @@ class CompilerBase extends \PhpAot\Core\Translator
                 if ($this->isArrayVar($node->var)) {
                     $this->fatalError($node->var, 'Cannot concat string to array');
                 }
-
                 return $var . '.append(' . $rightExprStr . ')';
             }
             if ($this->isAssignOpPow($op)) {
-                $powExpr = 'php::call(php::pow, {' . $var . ', ' . $rightExprStr . '})';
-
+                $powExpr = 'php::math::pow(' . $var . ', ' . $rightExprStr . ')';
                 return $var . ' = ' . $this->convertVarType($var, $powExpr);
             }
             return $var . ' ' . $op . ' ' . $rightExprStr;
         }
+
         if ($leftExprType === self::EXPR_ARRAY_DIM_FETCH) {
             /**
              * $count[$r] -= 1;
@@ -2313,8 +2313,7 @@ class CompilerBase extends \PhpAot\Core\Translator
             $fn = $this->getFuncPtr($name);
             $this->context->beforeStmtLines[] = '// Func Call: ' . $name . '()';
         } else {
-            $tmpVar = $this->genTmpVarName();
-            $this->addLocalVar($tmpVar, self::TYPE_VAR);
+            $tmpVar = $this->addTmpVar(self::TYPE_VAR);
             $this->context->beforeStmtLines[] = $tmpVar . ' = ' . $this->parseExpr($expr->name) . ';';
             $placeHolder = $fn = $tmpVar;
             $name = '';
@@ -2633,7 +2632,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         $left  = $this->parseIdentifier($expr->left);
         $right = $this->parseIdentifier($expr->right);
 
-        return 'php::pow(' . $left . ', ' . $right . ')';
+        return 'php::math::pow(' . $left . ', ' . $right . ')';
     }
 
     protected function parsePreDec(Node\Expr\PreDec $expr): string
diff --git a/src/Php/FuncCallOptimizer.php b/src/Php/FuncCallOptimizer.php
index 44e9c9b5..be16620b 100644
--- a/src/Php/FuncCallOptimizer.php
+++ b/src/Php/FuncCallOptimizer.php
@@ -44,6 +44,9 @@ trait FuncCallOptimizer
         if ($name === 'abs') {
             return 'php::math::abs(' . $getArg(0) . ')';
         }
+        if ($name === 'pow') {
+            return 'php::math::pow(' . $getArg(0) . ', ' . $getArg(1) . ')';
+        }
         if ($name === 'ord') {
             return 'php::fn::ord(' . $getArg(0) . ')';
         }
diff --git a/tests/aot/pow-assign-op.phpt b/tests/aot/pow-assign-op.phpt
index ce6a0b13..5efab255 100644
--- a/tests/aot/pow-assign-op.phpt
+++ b/tests/aot/pow-assign-op.phpt
@@ -5,6 +5,9 @@ strlen
 $a = 2;
 $a **= 10;
 var_dump($a);
+
+$d = pow(3, 4);
+assert($d == 81);
 ?>
 --EXPECT--
 int(1024)