diff --git a/CMakeLists.txt b/CMakeLists.txt
index b19b41c..951be7f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,3 +23,5 @@ target_link_libraries(endgame-analyzer Boost::program_options)
 target_link_libraries(endgame-analyzer readline)
 
 #set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_GLIBCXX_DEBUG")
+# This enables assertions in the RelWithDebInfo build type (assuming gcc or clang)
+string(REPLACE "-DNDEBUG" "" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")