diff --git a/nemu/1 b/nemu/1
index ce5e639..4e1b6e2 100644
--- a/nemu/1
+++ b/nemu/1
@@ -167,9 +167,9 @@ If it is the second case, remember:
 0x80000068: 02 f7 66 33 rem	a2, a4, a5
 [INFO] src/cpu/cpu-exec.c:125 cpu_exec() nemu: ABORT at pc = 0x80000068
 [INFO] src/cpu/cpu-exec.c:125 cpu_exec() nemu: ABORT at pc = 0x80000068
-[INFO] src/cpu/cpu-exec.c:93 statistic() host time spent = 376 us
-[INFO] src/cpu/cpu-exec.c:93 statistic() host time spent = 376 us
+[INFO] src/cpu/cpu-exec.c:93 statistic() host time spent = 381 us
+[INFO] src/cpu/cpu-exec.c:93 statistic() host time spent = 381 us
 [INFO] src/cpu/cpu-exec.c:94 statistic() total guest instructions = 123
 [INFO] src/cpu/cpu-exec.c:94 statistic() total guest instructions = 123
-[INFO] src/cpu/cpu-exec.c:95 statistic() simulation frequency = 327,127 inst/s
-[INFO] src/cpu/cpu-exec.c:95 statistic() simulation frequency = 327,127 inst/s
+[INFO] src/cpu/cpu-exec.c:95 statistic() simulation frequency = 322,834 inst/s
+[INFO] src/cpu/cpu-exec.c:95 statistic() simulation frequency = 322,834 inst/s
diff --git a/nemu/Makefile b/nemu/Makefile
index 38a9b55..0bf5613 100644
--- a/nemu/Makefile
+++ b/nemu/Makefile
@@ -84,7 +84,7 @@ $(IMAGES): %: %.bin $(BINARY)
 
 integration-tests: $(IMAGES) 
 	@cat $(RESULT)
-	@echo $(shell wc -l $(RESULT) | cut -f1)
+	@echo $(shell wc -l $(RESULT) | cut -f1 -d' ')
 	@$(RM) $(RESULT)
 
 test: unit-tests integration-tests