diff --git a/src/lib/openjp2/j2k.c b/src/lib/openjp2/j2k.c
index 6acd3ec5..93f8a3db 100644
--- a/src/lib/openjp2/j2k.c
+++ b/src/lib/openjp2/j2k.c
@@ -6150,6 +6150,11 @@ OPJ_BOOL opj_j2k_setup_encoder(     opj_j2k_t *p_j2k,
                 return OPJ_FALSE;
         }
 
+        if ((parameters->numresolution <= 0) || (parameters->numresolution > OPJ_J2K_MAXRLVLS)) {
+            opj_event_msg(p_manager, EVT_ERROR, "Invalid number of resolutions : %d not in range [1,%d]\n", parameters->numresolution, OPJ_J2K_MAXRLVLS);
+            return OPJ_FALSE;
+        }
+
         /* keep a link to cp so that we can destroy it later in j2k_destroy_compress */
         cp = &(p_j2k->m_cp);
 
@@ -7025,6 +7030,15 @@ OPJ_BOOL opj_j2k_encoding_validation (  opj_j2k_t * p_j2k,
         /* make sure a validation list is present */
         l_is_valid &= (p_j2k->m_validation_list != 00);
 
+	      /* ISO 15444-1:2004 states between 1 & 33 (0 -> 32) */
+	      /* 33 (32) would always fail the 2 checks below (if a cast to 64bits was done) */
+	      /* 32 (31) would always fail the 2 checks below (if a cast to 64bits was done) */
+        /* FIXME Shall we change OPJ_J2K_MAXRLVLS to 31 ? */
+        if ((p_j2k->m_cp.tcps->tccps->numresolutions <= 0) || (p_j2k->m_cp.tcps->tccps->numresolutions > 31)) {
+                opj_event_msg(p_manager, EVT_ERROR, "Number of resolutions is too high in comparison to the size of tiles\n");
+                return OPJ_FALSE;
+        }
+
         if ((p_j2k->m_cp.tdx) < (OPJ_UINT32) (1 << p_j2k->m_cp.tcps->tccps->numresolutions)) {
                 opj_event_msg(p_manager, EVT_ERROR, "Number of resolutions is too high in comparison to the size of tiles\n");
                 return OPJ_FALSE;