diff --git a/commandline.c b/commandline.c
index 28e563d1..62372c48 100644
--- a/commandline.c
+++ b/commandline.c
@@ -2484,7 +2484,7 @@ int app_reverse_lookup(const struct cli_parsed *parsed, struct cli_context *cont
   return 1;
 }
 
-int context_switch_test(int);
+void context_switch_test(int);
 int app_mem_test(const struct cli_parsed *parsed, struct cli_context *context)
 {
   int mem_size;
diff --git a/context1.c b/context1.c
index da819447..93402c36 100644
--- a/context1.c
+++ b/context1.c
@@ -38,7 +38,7 @@ void report()
 	stop_timing=1;
 }
 
-int context_switch_test(int duration)
+void context_switch_test(int duration)
 {
 	unsigned long	check;
 	int	p1[2], p2[2];