diff --git a/src/tests.asm b/src/tests.asm
index b5036cd..eb88cda 100644
--- a/src/tests.asm
+++ b/src/tests.asm
@@ -53,6 +53,8 @@
 %define assert_u_more(val)	assert val, ja,		testMsg_assertUMore
 %define assert_u_more_eq(val)	assert val, jae,	testMsg_assertUMoreE
 
+;perror.asm
+extern	perror
 ;core.asm
 extern	exit
 extern	islower
@@ -65,6 +67,8 @@ extern	max
 extern	maxu
 extern	clamp
 extern	clampu
+extern	umask_set
+extern	umask_get
 ;console.asm
 extern	print
 extern	puts
@@ -79,6 +83,10 @@ extern	strcmp
 extern	atoi
 extern	itoa
 extern	utoa
+;file.asm
+extern	fopen
+extern	fclose
+extern	fexist
 
 section .rodata
 	;;;