diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index 9d2e0ed..cd65192 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -842,8 +842,8 @@ static dir_entry *find_directory_entry(fsdata *mydata, int startsect,
 
 			get_name(dentptr, s_name);
 
-			if (strcmp(filename, s_name)
-			    && strcmp(filename, l_name)) {
+			if (strncasecmp(filename, s_name, sizeof(s_name)) &&
+			    strncasecmp(filename, l_name, sizeof(l_name))) {
 				debug("Mismatch: |%s|%s|\n",
 					s_name, l_name);
 				dentptr++;