diff --git a/netpbm/converter/other/fiasco/lib/image.c b/netpbm/converter/other/fiasco/lib/image.c
index 0168734..22e379b 100644
--- a/netpbm/converter/other/fiasco/lib/image.c
+++ b/netpbm/converter/other/fiasco/lib/image.c
@@ -239,7 +239,7 @@ alloc_image (unsigned width, unsigned height, bool_t color, format_e format)
    image->format      = format;
    image->reference_count = 1;
    
-   strcpy (image->id, "IFIASCO");
+   strncpy (image->id, "IFIASCO", sizeof(image->id));
 
    for (band = first_band (color); band <= last_band (color); band++)
       if (format == FORMAT_4_2_0 && band != Y)