diff --git a/ext/bz2/bz2.c b/ext/bz2/bz2.c
index 9a8d956e4fd10..d83853aef9d3e 100644
--- a/ext/bz2/bz2.c
+++ b/ext/bz2/bz2.c
@@ -496,7 +496,7 @@ PHP_FUNCTION(bzdecompress)
 	zend_string *dest;
 	size_t source_len;
 	int error;
-	zend_long small = 0;
+	zend_bool small = 0;
 #ifdef PHP_WIN32
 	unsigned __int64 size = 0;
 #else
@@ -504,7 +504,7 @@ PHP_FUNCTION(bzdecompress)
 #endif
 	bz_stream bzs;
 
-	if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS(), "s|l", &source, &source_len, &small)) {
+	if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS(), "s|b", &source, &source_len, &small)) {
 		RETURN_THROWS();
 	}
 
diff --git a/ext/bz2/bz2.stub.php b/ext/bz2/bz2.stub.php
index c1709e8b3325f..279f96d496a53 100644
--- a/ext/bz2/bz2.stub.php
+++ b/ext/bz2/bz2.stub.php
@@ -38,6 +38,6 @@ function bzerrstr($bz): string {}
 /** @param resource $bz */
 function bzerror($bz): array {}
 
-function bzcompress(string $source, int $blocksize = 4, int $workfactor = 0): string|int {}
+function bzcompress(string $data, int $block_size = 4, int $work_factor = 0): string|int {}
 
-function bzdecompress(string $source, int $small = 0): string|int|false {}
+function bzdecompress(string $data, bool $use_less_memory = false): string|int|false {}
diff --git a/ext/bz2/bz2_arginfo.h b/ext/bz2/bz2_arginfo.h
index 83073c0de75bd..25e674df18242 100644
--- a/ext/bz2/bz2_arginfo.h
+++ b/ext/bz2/bz2_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 8eefa180e67776e8e0ba1b27fbf9b32c5b71725c */
+ * Stub hash: 6953f91be31777e4d4e3652f75eec6d968cf636a */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_bzopen, 0, 0, 2)
 	ZEND_ARG_INFO(0, file)
@@ -36,14 +36,14 @@ ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_bzerror, 0, 1, IS_ARRAY, 0)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_bzcompress, 0, 1, MAY_BE_STRING|MAY_BE_LONG)
-	ZEND_ARG_TYPE_INFO(0, source, IS_STRING, 0)
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, blocksize, IS_LONG, 0, "4")
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, workfactor, IS_LONG, 0, "0")
+	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, block_size, IS_LONG, 0, "4")
+	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, work_factor, IS_LONG, 0, "0")
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_MASK_EX(arginfo_bzdecompress, 0, 1, MAY_BE_STRING|MAY_BE_LONG|MAY_BE_FALSE)
-	ZEND_ARG_TYPE_INFO(0, source, IS_STRING, 0)
-	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, small, IS_LONG, 0, "0")
+	ZEND_ARG_TYPE_INFO(0, data, IS_STRING, 0)
+	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, use_less_memory, _IS_BOOL, 0, "false")
 ZEND_END_ARG_INFO()
 
 
diff --git a/ext/bz2/tests/005.phpt b/ext/bz2/tests/005.phpt
index ff14e65659d15..5fc7ef0b7c2af 100644
--- a/ext/bz2/tests/005.phpt
+++ b/ext/bz2/tests/005.phpt
@@ -26,9 +26,8 @@ var_dump(bzdecompress(1,1));
 var_dump(bzdecompress($data3));
 var_dump(bzdecompress($data3,1));
 
-var_dump(bzdecompress($data, -1));
 var_dump(bzdecompress($data, 0));
-var_dump(bzdecompress($data, 1000));
+var_dump(bzdecompress($data, 1));
 var_dump(bzdecompress($data));
 var_dump(bzdecompress($data2));
 
@@ -43,12 +42,14 @@ int(-2)
 int(-5)
 int(-5)
 int(-5)
-bool(false)
 string(110) "Life it seems, will fade away
 Drifting further everyday
 Getting lost within myself
 Nothing matters no one else"
-bool(false)
+string(110) "Life it seems, will fade away
+Drifting further everyday
+Getting lost within myself
+Nothing matters no one else"
 string(110) "Life it seems, will fade away
 Drifting further everyday
 Getting lost within myself