diff --git a/apps/logfdisp.c b/apps/logfdisp.c
index 2e85b5ce30..2858fba566 100644
--- a/apps/logfdisp.c
+++ b/apps/logfdisp.c
@@ -98,7 +98,7 @@ bool logfdump(void)
         /* nothing is logged just yet */
         return false;
     
-    fd = open("/.rockbox/logf.txt", O_CREAT|O_WRONLY);
+    fd = open("/.rockbox/logf.txt", O_CREAT|O_WRONLY|O_TRUNC);
     if(-1 != fd) {
         unsigned char buffer[MAX_LOGF_ENTRY +1];
         int index = logfindex-1;