diff --git a/CMakeLists.txt b/CMakeLists.txt
index 068cd03..113f903 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,7 @@ file(MAKE_DIRECTORY ${EXTERNAL_DEPS_DIR})
 if(${CMAKE_BUILD_TYPE} STREQUAL "Release")
         set(USE_POLYSCOPE FALSE)
 else()
+        add_compile_definitions(POLYSCOPE_DEFINED)
         set(USE_POLYSCOPE TRUE)
 endif()
 set(MYSOURCES_STATIC_LINK FALSE)