diff --git a/ext/opcache/jit/zend_jit_trace.c b/ext/opcache/jit/zend_jit_trace.c
index 9c54767fc226..4148fa8c5308 100644
--- a/ext/opcache/jit/zend_jit_trace.c
+++ b/ext/opcache/jit/zend_jit_trace.c
@@ -2357,6 +2357,7 @@ static zend_ssa *zend_jit_trace_build_tssa(zend_jit_trace_rec *trace_buffer, uin
 				/* Add statically inferred restrictions */
 				if (ssa_ops[idx].op1_def >= 0) {
 					if (opline->opcode == ZEND_SEND_VAR_EX
+					 && opline->op2_type != IS_CONST
 					 && frame
 					 && frame->call
 					 && frame->call->func
diff --git a/ext/opcache/tests/jit/gh25359.phpt b/ext/opcache/tests/jit/gh25359.phpt
new file mode 100644
index 000000000000..b9c011cea57b
--- /dev/null
+++ b/ext/opcache/tests/jit/gh25359.phpt
@@ -0,0 +1,27 @@
+--TEST--
+GH-25359 (Tracing JIT drops reference type of CV passed as a named by-ref argument)
+--EXTENSIONS--
+opcache
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.jit=tracing
+opcache.jit_hot_func=1
+--FILE--
+<?php
+namespace Test;
+function f(&$a = null, &$b = null) { $b++; }
+function g(int $s) {
+	f(b: $s);
+	return $s + 1;
+}
+for ($i = 0; $i < 5; $i++) {
+	var_dump(g(41));
+}
+?>
+--EXPECT--
+int(43)
+int(43)
+int(43)
+int(43)
+int(43)