diff --git a/misc/pam_authentication/makefile b/misc/pam_authentication/makefile
index 7c7adf6b2060fc5827c917a38f804d226ce764c1..26bd0e9fcab2420c0f88219248bf57f768d64068 100644
--- a/misc/pam_authentication/makefile
+++ b/misc/pam_authentication/makefile
@@ -23,5 +23,5 @@
 # Makefile for pam_authentication.c
 
 main: pam_authentication.c
-	mkdir ./bin
+	mkdir -p ./bin
 	gcc -o ./bin/pam_authentication pam_authentication.c -lpam -lpam_misc