diff --git a/CMakeLists.txt b/CMakeLists.txt
index ab3d943..fa88a6f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,6 +41,10 @@ if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
   set (CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++")
 endif ()
 
+if ("${CMAKE_BUILD_TYPE}" STREQUAL "Debug")
+  set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g3")
+endif ()
+
 if (USE_APPIMAGE AND "${CMAKE_BUILD_TYPE}" STREQUAL "Release")
   set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -s")
   set (CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -s")