diff --git a/include/valijson/adapters/picojson_adapter.hpp b/include/valijson/adapters/picojson_adapter.hpp
index b6d17c9..6d04c52 100644
--- a/include/valijson/adapters/picojson_adapter.hpp
+++ b/include/valijson/adapters/picojson_adapter.hpp
@@ -29,7 +29,7 @@
 
 #include <string>
 
-#include <picojson.h>
+#include <picojson/picojson.h>
 
 #include <valijson/adapters/adapter.hpp>
 #include <valijson/adapters/basic_adapter.hpp>
diff --git a/include/valijson/utils/picojson_utils.hpp b/include/valijson/utils/picojson_utils.hpp
index 2ca4d46..b983648 100644
--- a/include/valijson/utils/picojson_utils.hpp
+++ b/include/valijson/utils/picojson_utils.hpp
@@ -4,7 +4,7 @@
 
 #include <iostream>
 
-#include <picojson.h>
+#include <picojson/picojson.h>
 
 #include <valijson/utils/file_utils.hpp>