diff --git a/libisofs/rockridge_read.c b/libisofs/rockridge_read.c
index 4f47d67..4b10280 100644
--- a/libisofs/rockridge_read.c
+++ b/libisofs/rockridge_read.c
@@ -302,7 +302,7 @@ int read_rr_NM(struct susp_sys_user_entry *nm, char **name, int *cont)
         *name = realloc(*name, strlen(*name) + nm->len_sue[0] - 5 + 1);
         strncat(*name, (char*)nm->data.NM.name, nm->len_sue[0] - 5);
     } else {
-        *name = strcopy((char*)nm->data.NM.name, nm->len_sue[0] - 5);
+        *name = iso_util_strcopy((char*)nm->data.NM.name, nm->len_sue[0] - 5);
     }
     if (*name == NULL) {
         return ISO_OUT_OF_MEM;
@@ -380,7 +380,7 @@ int read_rr_SL(struct susp_sys_user_entry *sl, char **dest, int *cont)
             /* we don't have to add the '/' */
             strncat(*dest, comp, len);
         } else {
-            *dest = strcopy(comp, len);
+            *dest = iso_util_strcopy(comp, len);
         }
         if (*dest == NULL) {
             return ISO_OUT_OF_MEM;
diff --git a/libisofs/util.c b/libisofs/util.c
index 227c20a..3ef6a8e 100644
--- a/libisofs/util.c
+++ b/libisofs/util.c
@@ -1381,6 +1381,10 @@ int iso_eaccess(const char *path)
     return ISO_SUCCESS;
 }
 
+
+#ifdef NIX
+/* <<< Buggy and not used any more */
+
 char *strcopy(const char *buf, size_t len)
 {
     char *str;
@@ -1401,24 +1405,37 @@ char *strcopy(const char *buf, size_t len)
     return str;
 }
 
-char *iso_util_strcopy_untail(const char *buf, size_t len)
+#endif /* NIX */
+
+
+char *iso_util_strcopy(const char *buf, size_t len)
 {
     char *str;
     
-    str = malloc((len + 1) * sizeof(char));
+    str = calloc(len + 1, 1);
     if (str == NULL) {
         return NULL;
     }
     strncpy(str, buf, len);
-    str[len] = 0;
+    str[len] = '\0';
+    return str;
+}
+
+
+char *iso_util_strcopy_untail(const char *buf, size_t len)
+{
+    char *str;
     
+    str = iso_util_strcopy(buf, len);
+    if (str == NULL) {
+        return NULL;
+    }
     /* remove trailing spaces */
     for (len = len-1; len >= 0; --len) {
         if (str[len] != ' ')
     break;
         str[len] = 0; 
     }
-    
     return str;
 }
 
diff --git a/libisofs/util.h b/libisofs/util.h
index 9f51390..ec8c06d 100644
--- a/libisofs/util.h
+++ b/libisofs/util.h
@@ -246,6 +246,9 @@ time_t iso_datetime_read_17(const uint8_t *buf);
  */
 int iso_eaccess(const char *path);
 
+#ifdef NIX
+/* <<< Buggy and not used any more */
+
 /**
  * Copy up to \p len chars from \p buf and return this newly allocated
  * string. The new string is null-terminated.
@@ -255,6 +258,14 @@ int iso_eaccess(const char *path);
  */
 char *strcopy(const char *buf, size_t len);
 
+#endif /* NIX */
+
+/**
+ * Copy up to \p len chars from \p buf and return this newly allocated
+ * string. The new string is null-terminated.
+ */
+char *iso_util_strcopy(const char *buf, size_t len);
+
 /**
  * Copy up to \p len chars from \p buf and return this newly allocated
  * string. The new string is null-terminated.