diff --git a/test/compare_file.c b/test/compare_file.c
index d27f740e..cb6f3925 100644
--- a/test/compare_file.c
+++ b/test/compare_file.c
@@ -5,7 +5,7 @@
   To compare tree /media/dvd and /original/dir :
       find /media/dvd -exec compare_file '{}' /media/dvd /original/dir ';'
 
-  Copyright 2008 - 2015 Thomas Schmitt, <scdbackup@gmx.net>
+  Copyright 2008 - 2024 Thomas Schmitt, <scdbackup@gmx.net>
 
   Provided under GPL version 2 or later.
 
@@ -304,7 +304,8 @@ int main(int argc, char **argv)
  strcpy(adr1, argv[1]);
  strcpy(adrc, argv[1]+strlen(argv[2]));
  strcpy(adr2, argv[3]);
- if(adrc[0] == '/' || adrc[0] == 0)
+ if(!(adrc[0] == '/' || adrc[0] == 0 ||
+      (strlen(adr2) > 0 && adr2[strlen(adr2) - 1] == '/')))
    strcat(adr2, "/");
  strcat(adr2, adrc);