diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -35,6 +35,12 @@
 set(CMAKE_CXX_FLAGS_RELWITHDEBINFO
 	"${RELWITHDEBINFO_G_CXX_FLAG} ${RELWITHDEBINFO_O_CXX_FLAG}")
 
+# Default to RelWithDebInfo configuration
+if(NOT CMAKE_BUILD_TYPE)
+	set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING
+		"Select the configuration for the build" FORCE)
+endif()
+
 # Ensure that WINDRES_PREPROC is enabled when using windres.
 if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
 	list(APPEND CMAKE_RC_FLAGS "-DWINDRES_PREPROC")