diff --git a/sysctl.c b/sysctl.c
index b7f2223..e9a3898 100644
--- a/sysctl.c
+++ b/sysctl.c
@@ -59,6 +59,10 @@ getsysctl(char *variable, char **value)
 	if (p)
 		*p = '\0';
 
+	for (p = variable; *p; p++)
+		if (*p == '/')
+			*p = '.';
+
 	*value = buf;
 
 	close(fd);