1 files changed, 1 insertions, 1 deletions

diff --git a/modutils/modutils.c b/modutils/modutils.c
index 0d7d72d8b..8836f7c69 100644
--- a/modutils/modutils.c
+++ b/modutils/modutils.c
@@ -71,7 +71,7 @@ char * FAST_FUNC filename2modname(const char *filename, char *modname)
         if (modname == NULL)
                 modname = xmalloc(MODULE_NAME_LEN);
         from = bb_get_last_path_component_nostrip(filename);
-        for (i = 0; i < MODULE_NAME_LEN && from[i] != '\0' && from[i] != '.'; i++)
+        for (i = 0; i < (MODULE_NAME_LEN-1) && from[i] != '\0' && from[i] != '.'; i++)
                 modname[i] = (from[i] == '-') ? '_' : from[i];
         modname[i] = 0;