--- check_disk.c	2004-03-22 16:54:43.000000000 +0000
+++ ./nagios-plugins-1.3.1/plugins/check_disk.c	2003-07-11 07:03:47.000000000 +0100
@@ -94,9 +94,8 @@
 
 	while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
 
-	        if (index (input_buffer, '/') != input_buffer) {	    
-	                continue;
-	        }
+		if (!index (input_buffer, '/'))
+			continue;
 
 		/* Fixes AIX /proc fs which lists - for size values */
 		if (strstr (input_buffer, "/proc ") == input_buffer)