diff --git a/2019/endoh/Makefile b/2019/endoh/Makefile
index fb322c5de..d8b26d3f5 100644
--- a/2019/endoh/Makefile
+++ b/2019/endoh/Makefile
@@ -65,7 +65,7 @@ CINCLUDE=
 
 # Optimization
 #
-# We MUST DISABLE THE OPTIMISER AND ENABLE -g because the entry is A BACKTRACE
+# We disable the optimiser and we enable -g because the entry is A BACKTRACE
 # QUINE and NEEDS debugging symbols.
 OPT= -O0 -g
 
@@ -132,10 +132,10 @@ all: data ${TARGET}
 	sandwich supernova deep_magic magic charon pluto
 
 # We FORCE the use of -O0 -g even if someone overrides it because this entry is
-# a BACKTRACE QUINE and NEEDS DEBUGGING SYMBOLS.
+# a BACKTRACE QUINE and NEEDS debugging symbols.
 #
 ${PROG}: ${PROG}.c
-	${CC} ${CFLAGS} -g $< -o $@ ${LDFLAGS}
+	${CC} ${CFLAGS} -O0 -g $< -o $@ ${LDFLAGS}
 
 ascii: ascii.c
 	${CC} $< -o $@
diff --git a/2019/endoh/README.md b/2019/endoh/README.md
index 43d022325..e13f45560 100644
--- a/2019/endoh/README.md
+++ b/2019/endoh/README.md
@@ -4,8 +4,8 @@
 make
 ```
 
-NOTE: we FORCE disable the optimiser and FORCE enable `-g` as this is a
-BACKTRACE QUINE and NEEDS debugging symbols.
+NOTE: the use of the C compiler optimiser was disabled and `-g` was enabled for
+this entry because it is SUPPOSED to crash and it needs debugging symbols.
 
 
 ### Bugs and (Mis)features: