diff --git a/aegisub/src/libresrc/Makefile.inc b/aegisub/src/libresrc/Makefile.inc
index 3e2f8918d..ae45f5aa7 100644
--- a/aegisub/src/libresrc/Makefile.inc
+++ b/aegisub/src/libresrc/Makefile.inc
@@ -18,6 +18,8 @@ CLEANFILES += \
 	libresrc/default_config.cpp \
 	libresrc/default_config.h
 
+DISTCLEANFILES += default_config_platform.json
+
 GLOBAL_DEPS += libresrc/bitmap.h libresrc/default_config.h
 
 EXTRA_DIST += \