diff --git a/code/Makefile b/code/Makefile
index c10e91f73..440475ddb 100644
--- a/code/Makefile
+++ b/code/Makefile
@@ -6,7 +6,7 @@ SOURCES := $(filter-out lkm.c, $(wildcard *.c))
 TARGETS := $(SOURCES:.c=.o)
 
 CFLAGS += -g
-CFLAGS += -O0
+CFLAGS += -O2
 CFLAGS += -Wall
 CFLAGS += -Wextra
 
diff --git a/code/leak b/code/leak
index 5159c3025..0a55ba578 100755
Binary files a/code/leak and b/code/leak differ
diff --git a/code/leak.c b/code/leak.c
index 9776f51a4..0d5a5c2be 100644
--- a/code/leak.c
+++ b/code/leak.c
@@ -75,7 +75,7 @@ main(void)
 	size_t t_delta;
 	size_t t_prev = -1;
 	size_t last_slab = -1;
-	for (size_t i = 0; i < PIPE_BUFFER; i++) {
+	for (size_t i = 0; i < SPRAY; i++) {
 		pipe2(pipes[i], O_NONBLOCK);
 
 		size_t t0 = rdtsc_begin();