diff --git a/synfig-core/src/modules/mod_openexr/CMakeLists.txt b/synfig-core/src/modules/mod_openexr/CMakeLists.txt
index b5830c5..51687bd 100644
--- a/synfig-core/src/modules/mod_openexr/CMakeLists.txt
+++ b/synfig-core/src/modules/mod_openexr/CMakeLists.txt
@@ -9,7 +9,7 @@ target_sources(mod_openexr
 
 message(STATUS "OpenEXR include: ${OPENEXR_INCLUDE_DIRS}")
 
-target_include_directories(mod_openexr PRIVATE ${OPENEXR_INCLUDE_DIRS})
+target_include_directories(mod_openexr SYSTEM PRIVATE ${OPENEXR_INCLUDE_DIRS})
 
 target_link_libraries(mod_openexr synfig ${OPENEXR_LIBRARIES})
 
diff --git a/synfig-core/src/synfig/CMakeLists.txt b/synfig-core/src/synfig/CMakeLists.txt
index 8f72fae..e668047 100644
--- a/synfig-core/src/synfig/CMakeLists.txt
+++ b/synfig-core/src/synfig/CMakeLists.txt
@@ -10,13 +10,14 @@ message(STATUS "MLT DIR: ${MLT_INCLUDE_DIRS}")
 
 target_include_directories(synfig
 #    SYSTEM BEFORE PUBLIC
+SYSTEM PUBLIC
+        ${LIBXML_INCLUDE_DIRS}
 PUBLIC
         ${SIGCPP_INCLUDE_DIRS}
         ${GLIBMM_INCLUDE_DIRS}
         ${GIOMM_INCLUDE_DIRS}
         ${CAIRO_INCLUDE_DIRS}
         ${PANGO_INCLUDE_DIRS}
-        ${LIBXML_INCLUDE_DIRS}
         ${MLT_INCLUDE_DIRS}
         ${FFTW_INCLUDE_DIRS}
 )