diff -Naur aircrack-ng-1.1/src/airodump-ng.c aircrack-ng-1.1-patched/src/airodump-ng.c
--- aircrack-ng-1.1/src/airodump-ng.c	2011-07-06 10:28:54.000000000 -0400
+++ aircrack-ng-1.1-patched/src/airodump-ng.c	2011-07-06 10:24:40.000000000 -0400
@@ -383,8 +383,11 @@
 	unsigned char c[2];
 	struct oui *oui_ptr = NULL, *oui_head = NULL;
 
-	if (!(fp = fopen(OUI_PATH, "r")))
-		return NULL;
+	if (!(fp = fopen(OUI_PATH0, "r"))) {
+		if (!(fp = fopen(OUI_PATH1, "r"))) {
+			return NULL;
+		}
+	}
 
 	memset(buffer, 0x00, sizeof(buffer));
 	while (fgets(buffer, sizeof(buffer), fp) != NULL) {
@@ -3592,6 +3595,7 @@
 #define OUI_STR_SIZE 8
 #define MANUF_SIZE 128
 char *get_manufacturer(unsigned char mac0, unsigned char mac1, unsigned char mac2) {
+	static char * oui_location = NULL;
 	char oui[OUI_STR_SIZE + 1];
 	char *manuf;
 	//char *buffer_manuf;
@@ -3625,7 +3629,20 @@
 		}
 	} else {
 		// If the file exist, then query it each time we need to get a manufacturer.
-		fp = fopen(OUI_PATH, "r");
+		if (oui_location == NULL) {
+			fp = fopen(OUI_PATH0, "r");
+			if (fp == NULL) {
+				fp = fopen(OUI_PATH1, "r");
+				if (fp != NULL) {
+					oui_location = OUI_PATH1;
+				}
+			} else {
+				oui_location = OUI_PATH0;
+			}
+		} else {
+			fp = fopen(oui_location, "r");
+		}
+
 		if (fp != NULL) {
 
 			memset(buffer, 0x00, sizeof(buffer));
diff -Naur aircrack-ng-1.1/src/airodump-ng.h aircrack-ng-1.1-patched/src/airodump-ng.h
--- aircrack-ng-1.1/src/airodump-ng.h	2011-07-06 10:28:54.000000000 -0400
+++ aircrack-ng-1.1-patched/src/airodump-ng.h	2011-07-06 10:39:27.000000000 -0400
@@ -111,7 +111,8 @@
 "\x00\x00\x00\x00\x00\x00\x00\x00"
 "\x00\x00\x00\x00\x00\x00\x00\x00";
 
-#define OUI_PATH "/usr/local/etc/aircrack-ng/airodump-ng-oui.txt"
+#define OUI_PATH0 "/etc/aircrack-ng/airodump-ng-oui.txt"
+#define OUI_PATH1 "/usr/local/etc/aircrack-ng/airodump-ng-oui.txt"
 #define MIN_RAM_SIZE_LOAD_OUI_RAM 32768
 
 int read_pkts=0;