diff --git a/misc/miniLZO/Kconfig b/misc/miniLZO/Kconfig
index e1d7bd3209..63789328f7 100644
--- a/misc/miniLZO/Kconfig
+++ b/misc/miniLZO/Kconfig
@@ -24,6 +24,7 @@ if PKG_USING_MINILZO
         prompt "version"
         help
             Select the miniLZO version
+        default PKG_USING_MINILZO_LATEST_VERSION
 
         config PKG_USING_MINILZO_LATEST_VERSION
             bool "latest"
diff --git a/multimedia/PDFGen/Kconfig b/multimedia/PDFGen/Kconfig
index b8b997ebe2..a4917eb321 100644
--- a/multimedia/PDFGen/Kconfig
+++ b/multimedia/PDFGen/Kconfig
@@ -2,6 +2,7 @@
 # Kconfig file for package PDFGen
 menuconfig PKG_USING_PDFGEN
     bool "PDFGen: Simple C PDF Writer/Generation library"
+    select PKG_USING_RT_VSNPRINTF_FULL
     select RT_USING_LIBC     if RT_VER_NUM < 0x40100
     select RT_USING_DFS      if RT_VER_NUM < 0x40100
     select RT_USING_POSIX_FS if RT_VER_NUM >= 0x40100
diff --git a/peripherals/qkey/Kconfig b/peripherals/qkey/Kconfig
index 9a1911262a..3115ad79ac 100644
--- a/peripherals/qkey/Kconfig
+++ b/peripherals/qkey/Kconfig
@@ -70,7 +70,7 @@ if PKG_USING_QKEY
 
         config PKG_USING_QLED_V111
             bool "v1.11"
-            
+
         config PKG_USING_QLED_V110
             bool "v1.10"
 
diff --git a/peripherals/sensors/qmp6989/Kconfig b/peripherals/sensors/qmp6989/Kconfig
index 1de5735aae..6c070a73c4 100644
--- a/peripherals/sensors/qmp6989/Kconfig
+++ b/peripherals/sensors/qmp6989/Kconfig
@@ -58,7 +58,7 @@ if PKG_USING_QMP6989
         config PKG_USING_QMP6989_LATEST_VERSION
             bool "latest"
     endchoice
-          
+
     config PKG_QMP6989_VER
        string
        default "latest"    if PKG_USING_QMP6989_LATEST_VERSION
diff --git a/system/kmulti_rtimer/Kconfig b/system/kmulti_rtimer/Kconfig
index 853827c3f2..d942f5eae2 100644
--- a/system/kmulti_rtimer/Kconfig
+++ b/system/kmulti_rtimer/Kconfig
@@ -27,7 +27,7 @@ if PKG_USING_KMULTI_RTIMER
         config PKG_USING_KMULTI_RTIMER_LATEST_VERSION
             bool "latest"
     endchoice
-          
+
     config PKG_KMULTI_RTIMER_VER
        string
        default "latest"    if PKG_USING_KMULTI_RTIMER_LATEST_VERSION