diff --git a/src/xpath.c b/src/xpath.c
index 00850c4..4781538 100644
--- a/src/xpath.c
+++ b/src/xpath.c
@@ -7773,6 +7773,11 @@
 
             /* ']' */
             while (lyxp_check_token(NULL, exp, e_idx, LYXP_TOKEN_BRACK2)) {
+                if (!lyxp_check_token(NULL, exp, e_idx, LYXP_TOKEN_OPER_LOG)) {
+                    /* higher priority than '=' */
+                    rc = LY_ENOT;
+                    goto cleanup;
+                }
                 ++e_idx;
             }
 
@@ -7814,6 +7819,11 @@
 
         /* ']' */
         while (lyxp_check_token(NULL, exp, e_idx, LYXP_TOKEN_BRACK2)) {
+            if (!lyxp_check_token(NULL, exp, e_idx, LYXP_TOKEN_OPER_LOG)) {
+                /* higher priority than '=' */
+                rc = LY_ENOT;
+                goto cleanup;
+            }
             ++e_idx;
         }