diff --git a/CMakeLists.txt b/CMakeLists.txt
index ca4fa91..a13c183 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,6 @@ if(BUILD_SHARED_LIBS)
     add_definitions(-DBUILD_TICPP_DLL)
 endif(BUILD_SHARED_LIBS)
 
-add_definitions(-DTIXML_USE_TICPP)
 add_library(ticpp
     ticpp.cpp
     tinystr.cpp
@@ -16,3 +15,9 @@ add_library(ticpp
     tinyxmlerror.cpp
     tinyxmlparser.cpp
 )
+target_include_directories(ticpp
+    INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
+)
+target_compile_definitions(ticpp
+    PUBLIC TIXML_USE_TICPP
+)