1 files changed, 5 insertions, 7 deletions

diff --git a/src/firejail/fs_trace.c b/src/firejail/fs_trace.c
index 6058bf3c4..2b0f52a98 100644
--- a/src/firejail/fs_trace.c
+++ b/src/firejail/fs_trace.c
@@ -52,23 +52,21 @@ void fs_trace(void) {
         // create the new ld.so.preload file and mount-bind it
         if (arg_debug)
                 printf("Create the new ld.so.preload file\n");
-        char *preload;
-        if (asprintf(&preload, "%s/ld.so.preload", MNT_DIR) == -1)
-                errExit("asprintf");
-        FILE *fp = fopen(preload, "w");
+
+        FILE *fp = fopen(LDPRELOAD_FILE, "w");
         if (!fp)
                 errExit("fopen");
         fprintf(fp, "%s/firejail/libtrace.so\n", LIBDIR);
         fclose(fp);
-        if (chown(preload, 0, 0) < 0)
+        if (chown(LDPRELOAD_FILE, 0, 0) < 0)
                 errExit("chown");
-        if (chmod(preload, S_IRUSR | S_IWRITE | S_IRGRP | S_IROTH ) < 0)
+        if (chmod(LDPRELOAD_FILE, S_IRUSR | S_IWRITE | S_IRGRP | S_IROTH ) < 0)
                 errExit("chmod");
         
         // mount the new preload file
         if (arg_debug)
                 printf("Mount the new ld.so.preload file\n");
-        if (mount(preload, "/etc/ld.so.preload", NULL, MS_BIND|MS_REC, NULL) < 0)
+        if (mount(LDPRELOAD_FILE, "/etc/ld.so.preload", NULL, MS_BIND|MS_REC, NULL) < 0)
                 errExit("mount bind ls.so.preload");
 }