diff --git a/dictionaries/CallMap.php b/dictionaries/CallMap.php
index f7faaa4b875..219e6372641 100644
--- a/dictionaries/CallMap.php
+++ b/dictionaries/CallMap.php
@@ -9028,7 +9028,7 @@
 'NumberFormatter::__construct' => ['void', 'locale'=>'string', 'style'=>'int', 'pattern='=>'string'],
 'NumberFormatter::create' => ['NumberFormatter|false', 'locale'=>'string', 'style'=>'int', 'pattern='=>'string'],
 'NumberFormatter::format' => ['string|false', 'num'=>'', 'type='=>'int'],
-'NumberFormatter::formatCurrency' => ['string', 'num'=>'float', 'currency'=>'string'],
+'NumberFormatter::formatCurrency' => ['string|false', 'num'=>'float', 'currency'=>'string'],
 'NumberFormatter::getAttribute' => ['int|false', 'attr'=>'int'],
 'NumberFormatter::getErrorCode' => ['int'],
 'NumberFormatter::getErrorMessage' => ['string'],
diff --git a/dictionaries/CallMap_historical.php b/dictionaries/CallMap_historical.php
index 2c60a2ca437..a5c4875aa71 100644
--- a/dictionaries/CallMap_historical.php
+++ b/dictionaries/CallMap_historical.php
@@ -4420,7 +4420,7 @@
     'NumberFormatter::__construct' => ['void', 'locale'=>'string', 'style'=>'int', 'pattern='=>'string'],
     'NumberFormatter::create' => ['NumberFormatter|false', 'locale'=>'string', 'style'=>'int', 'pattern='=>'string'],
     'NumberFormatter::format' => ['string|false', 'num'=>'', 'type='=>'int'],
-    'NumberFormatter::formatCurrency' => ['string', 'num'=>'float', 'currency'=>'string'],
+    'NumberFormatter::formatCurrency' => ['string|false', 'num'=>'float', 'currency'=>'string'],
     'NumberFormatter::getAttribute' => ['int|false', 'attr'=>'int'],
     'NumberFormatter::getErrorCode' => ['int'],
     'NumberFormatter::getErrorMessage' => ['string'],