diff --git a/extension/meminfo.c b/extension/meminfo.c
index b91b5b5..bf87746 100644
--- a/extension/meminfo.c
+++ b/extension/meminfo.c
@@ -371,7 +371,7 @@ void meminfo_zval_dump(php_stream * stream, char * frame_label, zend_string * sy
 
         zend_string_release(escaped_class_name);
 
-        php_stream_printf(stream, "        \"object_handle\" : \"%d\",\n", Z_OBJ_HANDLE_P(zv));
+        php_stream_printf(stream, "        \"object_handle\" : \"%d\"", Z_OBJ_HANDLE_P(zv));
 
 #if PHP_VERSION_ID >= 70400
         properties = zend_get_properties_for(zv, ZEND_PROP_PURPOSE_DEBUG);
@@ -380,7 +380,11 @@ void meminfo_zval_dump(php_stream * stream, char * frame_label, zend_string * sy
         properties = Z_OBJDEBUG_P(zv, is_temp);
 #endif
 
+        // Some objects expose no debug property table at all (FFI\CType for
+        // instance). They get no "children" entry, so the separator must not
+        // be written for them.
         if (properties != NULL) {
+            php_stream_printf(stream, ",\n");
             meminfo_hash_dump(stream, properties, 1, visited_items, first_element);
 
 #if PHP_VERSION_ID >= 70400
@@ -391,6 +395,8 @@ void meminfo_zval_dump(php_stream * stream, char * frame_label, zend_string * sy
                 efree(properties);
             }
 #endif
+        } else {
+            php_stream_printf(stream, "\n");
         }
     } else if (Z_TYPE_P(zv) == IS_ARRAY) {
         php_stream_printf(stream, ",\n");
diff --git a/extension/tests/bug-github-104_ffi_object_invalid_json.phpt b/extension/tests/bug-github-104_ffi_object_invalid_json.phpt
new file mode 100644
index 0000000..8afd4c4
--- /dev/null
+++ b/extension/tests/bug-github-104_ffi_object_invalid_json.phpt
@@ -0,0 +1,41 @@
+--TEST--
+Check that an object without debug properties (FFI\CType) does not break the JSON dump
+--SKIPIF--
+<?php
+    if (!extension_loaded('json')) die('skip json ext not loaded');
+    if (!extension_loaded('FFI')) die('skip FFI ext not loaded');
+?>
+--INI--
+ffi.enable=1
+--FILE--
+<?php
+    $ffiType = FFI::type('int');
+
+    $dump = fopen('php://memory', 'rw');
+
+    meminfo_dump($dump);
+
+    rewind($dump);
+    $meminfoData = json_decode(stream_get_contents($dump), true);
+    fclose($dump);
+
+    if (!is_array($meminfoData)) {
+        echo "meminfo_dump JSON decode fail: ".json_last_error_msg()."\n";
+        return;
+    }
+
+    echo "meminfo_dump JSON decode ok\n";
+
+    $found = 'no';
+    foreach ($meminfoData['items'] as $item) {
+        if (isset($item['class']) && $item['class'] === 'FFI\\CType') {
+            $found = 'yes';
+        }
+    }
+
+    echo "FFI\\CType item present: ".$found."\n";
+
+?>
+--EXPECT--
+meminfo_dump JSON decode ok
+FFI\CType item present: yes