diff --git a/README.md b/README.md
index 134e448..a7d8cb3 100644
--- a/README.md
+++ b/README.md
@@ -103,6 +103,7 @@ Full documentation is available on https://Hieromon.github.io/AutoConnect, some
 
 ### [1.1.0] Oct. 15, 2019
 - Supprts static IPs with the 'Configure new AP' menu. (issue #132)
+- Fixed compilation error that no member named 'printTo' with ArduinoJson 5.
 
 ### [1.0.3] Sept. 30, 2019
 - Fixed a return of AutoConnectCredential::entries(). (issue #133)
diff --git a/examples/Credential/Credential.ino b/examples/Credential/Credential.ino
index ed1e0bc..fe2fa5e 100644
--- a/examples/Credential/Credential.ino
+++ b/examples/Credential/Credential.ino
@@ -125,7 +125,7 @@ String delCredential(PageArgument& args) {
     int8_t  e = args.arg("num").toInt();
     Serial.printf("Request deletion #%d\n", e);
     if (e > 0) {
-      struct  station_config entry;
+      station_config_t  entry;
 
       // If the input number is valid, delete that entry.
       int8_t  de = ac.load(e - 1, &entry);  // A base of entry num is 0.
diff --git a/mkdocs/changelog.md b/mkdocs/changelog.md
index 25a35b4..7e6e844 100644
--- a/mkdocs/changelog.md
+++ b/mkdocs/changelog.md
@@ -1,5 +1,6 @@
 #### [1.1.0] Oct. 15, 2019
 - Supports static IPs with the [**Configure new AP**](menu.md#configure-new-ap) menu.
+- Fixed compilation error that no member named 'printTo' with ArduinoJson 5.
 
 #### [1.0.3] Sept. 30, 2019
 - Fixed a return of AutoConnectCredential::entries().
diff --git a/src/AutoConnectUpdate.cpp b/src/AutoConnectUpdate.cpp
index 3b9b678..d5b7409 100644
--- a/src/AutoConnectUpdate.cpp
+++ b/src/AutoConnectUpdate.cpp
@@ -405,7 +405,7 @@ String AutoConnectUpdateAct::_onCatalog(AutoConnectAux& catalog, PageArgument& a
         if (parse) {
 #ifdef AC_DEBUG
           AC_DBG_DUMB("\n");
-          ARDUINOJSON_PRINT(jb, AC_DEBUG_PORT);
+          ARDUINOJSON_PRINT(json, AC_DEBUG_PORT);
 #endif
           // Register only bin type file name as available sketch binary to
           // AutoConnectRadio value based on the response from the update server.