diff --git a/src/schema_compile.h b/src/schema_compile.h
index d45156e..49f75d2 100644
--- a/src/schema_compile.h
+++ b/src/schema_compile.h
@@ -164,9 +164,9 @@
  * @param[out] DUP Where to store the result.
  * @param[out] RET Where to store the return code.
  */
-#define DUP_STRING(CTX, ORIG, DUP, RET) RET = lydict_insert(CTX, ORIG, 0, &(DUP))
-#define DUP_STRING_RET(CTX, ORIG, DUP) LY_CHECK_RET(lydict_insert(CTX, ORIG, 0, &(DUP)))
-#define DUP_STRING_GOTO(CTX, ORIG, DUP, RET, GOTO) LY_CHECK_GOTO(RET = lydict_insert(CTX, ORIG, 0, &(DUP)), GOTO)
+#define DUP_STRING(CTX, ORIG, DUP, RET) RET = lydict_dup(CTX, ORIG, &(DUP))
+#define DUP_STRING_RET(CTX, ORIG, DUP) LY_CHECK_RET(lydict_dup(CTX, ORIG, &(DUP)))
+#define DUP_STRING_GOTO(CTX, ORIG, DUP, RET, GOTO) LY_CHECK_GOTO(RET = lydict_dup(CTX, ORIG, &(DUP)), GOTO)
 
 #define DUP_ARRAY(CTX, ORIG_ARRAY, NEW_ARRAY, DUP_FUNC) \
     if (ORIG_ARRAY) { \
diff --git a/src/schema_compile_node.c b/src/schema_compile_node.c
index 46ae393..d57d8a7 100644
--- a/src/schema_compile_node.c
+++ b/src/schema_compile_node.c
@@ -1390,7 +1390,7 @@
         if (patterns_p[u].arg.str[0] == LYSP_RESTR_PATTERN_NACK) {
             (*pattern)->inverted = 1;
         }
-        DUP_STRING_GOTO(ctx->ctx, &patterns_p[u].arg.str[1], (*pattern)->expr, ret, done);
+        LY_CHECK_GOTO(ret = lydict_insert(ctx->ctx, &patterns_p[u].arg.str[1], 0, &(*pattern)->expr), done);
         DUP_STRING_GOTO(ctx->ctx, patterns_p[u].eapptag, (*pattern)->eapptag, ret, done);
         DUP_STRING_GOTO(ctx->ctx, patterns_p[u].emsg, (*pattern)->emsg, ret, done);
         DUP_STRING_GOTO(ctx->ctx, patterns_p[u].dsc, (*pattern)->dsc, ret, done);