diff --git a/CMakeLists.txt b/CMakeLists.txt
index ea4bdfbf..db2f2c65 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,11 +34,11 @@ endif()
 
 
 ###############################################################################
-RAGEL_TARGET(json-flat json/flat.cpp.rl ${CMAKE_BINARY_DIR}/json/flat.cpp)
-RAGEL_TARGET(uri uri.cpp.rl ${CMAKE_BINARY_DIR}/uri.cpp)
-RAGEL_TARGET(version version.cpp.rl ${CMAKE_BINARY_DIR}/version.cpp)
+RAGEL_TARGET(json-flat json/flat.cpp.rl ${CMAKE_CURRENT_BINARY_DIR}/json/flat.cpp)
+RAGEL_TARGET(uri uri.cpp.rl ${CMAKE_CURRENT_BINARY_DIR}/uri.cpp)
+RAGEL_TARGET(version version.cpp.rl ${CMAKE_CURRENT_BINARY_DIR}/version.cpp)
 
-include_directories(${CMAKE_SOURCE_DIR})
+include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 
 
 ###############################################################################