diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4707a460..cd7811ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -65,6 +65,8 @@ configure_boost()
 # set(CMAKE_FIND_DEBUG_MODE ON)
 # set(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH}")
 message(STATUS "CMAKE_PREFIX_PATH: ${CMAKE_PREFIX_PATH}")
+include_directories("${CMAKE_PREFIX_PATH}/include")
+message("${CMAKE_PREFIX_PATH}/include")
 find_package(Boost ${BOOST_MIN_VERSION} REQUIRED)
 if(Boost_FOUND)
   include_directories(${Boost_INCLUDE_DIRS})
diff --git a/exe/CMakeLists.txt b/exe/CMakeLists.txt
index e76bdef3..eed189ab 100644
--- a/exe/CMakeLists.txt
+++ b/exe/CMakeLists.txt
@@ -3,4 +3,3 @@ target_link_libraries(domain loki::parsers)
 
 add_executable(problem "problem.cpp")
 target_link_libraries(problem loki::parsers)
-
diff --git a/include/loki/common/ast/config.hpp b/include/loki/common/ast/config.hpp
index 30bc09e6..5a7ea21b 100644
--- a/include/loki/common/ast/config.hpp
+++ b/include/loki/common/ast/config.hpp
@@ -22,6 +22,8 @@
 #include <boost/spirit/home/x3/support/ast/position_tagged.hpp>
 #include <boost/spirit/home/x3/support/utility/error_reporting.hpp>
 
+#include <string>
+
 
 /// @brief Defines types of our parsers.
 ///        The configuration is relevant when reusing the parsers instantiated by the library.
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4ad6e396..9b5f069f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,3 +1,16 @@
+file(GLOB HEADER_FILES
+    "../include/loki/common/*.hpp"
+    "../include/loki/common/ast/*.hpp"
+    "../include/loki/common/pddl/*.hpp"
+    "../include/loki/common/pddl/parser/*.hpp"
+    "../include/loki/domain/*.hpp"
+    "../include/loki/domain/ast/*.hpp"
+    "../include/loki/domain/pddl/*.hpp"
+    "../include/loki/domain/pddl/parser/*.hpp"
+    "../include/loki/problem/*.hpp"
+    "../include/loki/problem/ast/*.hpp"
+    "../include/loki/problem/pddl/*.hpp"
+    "../include/loki/problem/pddl/parser/*.hpp")
 file(GLOB SRC_FILES
     "common/*.cpp"
     "common/ast/*.cpp"
@@ -11,7 +24,7 @@ file(GLOB SRC_FILES
     "problem/ast/*.cpp"
     "problem/pddl/*.cpp"
     "problem/pddl/parser/*.cpp")
-add_library(parsers STATIC ${SRC_FILES})
+add_library(parsers STATIC ${SRC_FILES} ${HEADER_FILES})
 set_target_properties(parsers PROPERTIES OUTPUT_NAME loki_parsers)
 
 # target_link_libraries(parsers PRIVATE flatbuffers)