Index: uspace/srv/fs/exfat/exfat_fat.c
===================================================================
--- uspace/srv/fs/exfat/exfat_fat.c	(revision 5b56dc7b022390dabd9e63439e7b60a3073284ae)
+++ uspace/srv/fs/exfat/exfat_fat.c	(revision 2a0800506a1ff0ea264a43ef534635ebf6a0734e)
@@ -401,5 +401,5 @@
 {
 	service_id_t service_id = nodep->idx->service_id;
-	exfat_cluster_t lastc;
+	exfat_cluster_t lastc = 0;
 	int rc;
 
Index: uspace/srv/fs/fat/fat_fat.c
===================================================================
--- uspace/srv/fs/fat/fat_fat.c	(revision 5b56dc7b022390dabd9e63439e7b60a3073284ae)
+++ uspace/srv/fs/fat/fat_fat.c	(revision 2a0800506a1ff0ea264a43ef534635ebf6a0734e)
@@ -785,5 +785,5 @@
 {
 	service_id_t service_id = nodep->idx->service_id;
-	fat_cluster_t lastc;
+	fat_cluster_t lastc = 0;
 	uint8_t fatno;
 	int rc;