diff --git a/readme.md b/readme.md
index 08a0b6731..cd8f2894c 100644
--- a/readme.md
+++ b/readme.md
@@ -118,7 +118,7 @@ Flags:
 If you just want to build Cppcheck without dependencies then you can use this command:
 
 ```shell
-g++ -o cppcheck -std=c++11 -Iexternals -Iexternals/simplecpp -Iexternals/tinyxml2 -Ilib cli/*.cpp lib/*.cpp externals/simplecpp/simplecpp.cpp externals/tinyxml2/*.cpp
+g++ -o cppcheck -std=c++11 -Iexternals -Iexternals/simplecpp -Iexternals/tinyxml2 -Iexternals/picojson -Ilib cli/*.cpp lib/*.cpp externals/simplecpp/simplecpp.cpp externals/tinyxml2/*.cpp
 ```
 
 If you want to use `--rule` and `--rule-file` then dependencies are needed: