diff --git a/src/kernel/apps/exec_test.c b/src/kernel/apps/exec_test.c
index f8d52e2198..ce1409342b 100644
--- a/src/kernel/apps/exec_test.c
+++ b/src/kernel/apps/exec_test.c
@@ -12,7 +12,7 @@
 #include <errno.h>
 
 
-void
+static void
 print_process_info(const char *text)
 {
 	puts(text);