diff --git a/third_party/libopenjpeg20/j2k.c b/third_party/libopenjpeg20/j2k.c
index e77edd22b..cb5a28373 100644
--- a/third_party/libopenjpeg20/j2k.c
+++ b/third_party/libopenjpeg20/j2k.c
@@ -2117,10 +2117,16 @@ static OPJ_BOOL opj_j2k_read_siz(opj_j2k_t *p_j2k,
                 if( l_img_comp->dx < 1 || l_img_comp->dx > 255 ||
                     l_img_comp->dy < 1 || l_img_comp->dy > 255 ) {
                     opj_event_msg(p_manager, EVT_ERROR,
-                                  "Invalid values for comp = %d : dx=%u dy=%u\n (should be between 1 and 255 according the JPEG2000 norm)",
+                                  "Invalid values for comp = %d : dx=%u dy=%u (should be between 1 and 255 according to the JPEG2000 norm)\n",
                                   i, l_img_comp->dx, l_img_comp->dy);
                     return OPJ_FALSE;
                 }
+                if( l_img_comp->prec > 38) { /* TODO openjpeg won't handle more than ? */
+                    opj_event_msg(p_manager, EVT_ERROR,
+                                  "Invalid values for comp = %d : prec=%u (should be between 1 and 38 according to the JPEG2000 norm)\n",
+                                  i, l_img_comp->prec);
+                    return OPJ_FALSE;
+                }
 
 #ifdef USE_JPWL
                 if (l_cp->correct) {