diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0c46067e5..596da0178 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -212,8 +212,8 @@ set_package_properties(ZSTD PROPERTIES
     TYPE REQUIRED
 )
 
-# v2.0+ required for json_loads() with three arguments
-find_package(Jansson 2.0)
+# v2.6+ required for JSON_ALLOW_NUL
+find_package(Jansson 2.6)
 set_package_properties(Jansson PROPERTIES
     PURPOSE "Required for JSON support"
     DESCRIPTION "C library for encoding, decoding and manipulating JSON data"
diff --git a/src/core/tools/qjsondocument.cpp b/src/core/tools/qjsondocument.cpp
index 49c4286eb..25466be37 100644
--- a/src/core/tools/qjsondocument.cpp
+++ b/src/core/tools/qjsondocument.cpp
@@ -51,7 +51,7 @@ QVariantMap QJsonDocumentPrivate::jsonToMap(const QByteArray &jsondata)
     }
 
     json_error_t jerror;
-    json_t *jroot = json_loads(jsondata.constData(), 0, &jerror);
+    json_t *jroot = json_loads(jsondata.constData(), JSON_ALLOW_NUL, &jerror);
 
     if (!jroot) {
         error = jerror.text;