diff --git a/cmake/macros/TargetOpenEXR.cmake b/cmake/macros/TargetOpenEXR.cmake
index a8e7b27fe5..6a8690db58 100644
--- a/cmake/macros/TargetOpenEXR.cmake
+++ b/cmake/macros/TargetOpenEXR.cmake
@@ -68,6 +68,8 @@ macro(TARGET_OPENEXR)
         endforeach(OPENEXR_LIB)
 
         target_link_libraries(${TARGET_NAME} ${OPENEXR_LIBRARIES})
-        target_compile_definitions(${TARGET_NAME} PUBLIC OPENEXR_DLL)
+        if (WIN32)
+            target_compile_definitions(${TARGET_NAME} PUBLIC OPENEXR_DLL)
+        endif(WIN32)
     endif()
 endmacro()