diff --git a/dictionaries/CallMap.php b/dictionaries/CallMap.php
index 5f3dba9c880..853b78ed8a0 100644
--- a/dictionaries/CallMap.php
+++ b/dictionaries/CallMap.php
@@ -12923,8 +12923,8 @@
 'strrpos' => ['int|false', 'haystack'=>'string', 'needle'=>'string', 'offset='=>'int'],
 'strspn' => ['int', 'string'=>'string', 'characters'=>'string', 'offset='=>'int', 'length='=>'?int'],
 'strstr' => ['string|false', 'haystack'=>'string', 'needle'=>'string', 'before_needle='=>'bool'],
-'strtok' => ['string|false', 'string'=>'string', 'token'=>'string'],
-'strtok\'1' => ['string|false', 'string'=>'string'],
+'strtok' => ['non-empty-string|false', 'string'=>'string', 'token'=>'string'],
+'strtok\'1' => ['non-empty-string|false', 'string'=>'string'],
 'strtolower' => ['lowercase-string', 'string'=>'string'],
 'strtotime' => ['int|false', 'datetime'=>'string', 'baseTimestamp='=>'?int'],
 'strtoupper' => ['string', 'string'=>'string'],
diff --git a/dictionaries/CallMap_historical.php b/dictionaries/CallMap_historical.php
index 864b668bd0b..60e798e09cb 100644
--- a/dictionaries/CallMap_historical.php
+++ b/dictionaries/CallMap_historical.php
@@ -14333,8 +14333,8 @@
     'strrpos' => ['int|false', 'haystack'=>'string', 'needle'=>'string|int', 'offset='=>'int'],
     'strspn' => ['int', 'string'=>'string', 'characters'=>'string', 'offset='=>'int', 'length='=>'int'],
     'strstr' => ['string|false', 'haystack'=>'string', 'needle'=>'string|int', 'before_needle='=>'bool'],
-    'strtok' => ['string|false', 'string'=>'string', 'token'=>'string'],
-    'strtok\'1' => ['string|false', 'string'=>'string'],
+    'strtok' => ['non-empty-string|false', 'string'=>'string', 'token'=>'string'],
+    'strtok\'1' => ['non-empty-string|false', 'string'=>'string'],
     'strtolower' => ['lowercase-string', 'string'=>'string'],
     'strtotime' => ['int|false', 'datetime'=>'string', 'baseTimestamp='=>'int'],
     'strtoupper' => ['string', 'string'=>'string'],