diff --git a/ext/opcache/tests/gh17770_jit_file_cache_write.phpt b/ext/opcache/tests/gh17770_jit_file_cache_write.phpt
new file mode 100644
index 0000000000000..f372d98468076
--- /dev/null
+++ b/ext/opcache/tests/gh17770_jit_file_cache_write.phpt
@@ -0,0 +1,83 @@
+--TEST--
+GH-17770: opcache.file_cache writes with JIT enabled
+--SKIPIF--
+<?php
+@mkdir(__DIR__ . '/gh17770_cache', 0777, true);
+if (ini_get('opcache.jit') === false) {
+    die('skip JIT is not supported');
+}
+?>
+--EXTENSIONS--
+opcache
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.jit=tracing
+opcache.jit_buffer_size=16M
+opcache.file_cache="{PWD}/gh17770_cache"
+opcache.file_cache_consistency_checks=0
+--FILE--
+<?php
+function removeDirRecursive(string $dir): void {
+    if (!is_dir($dir)) {
+        return;
+    }
+
+    $iterator = new RecursiveIteratorIterator(
+        new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS),
+        RecursiveIteratorIterator::CHILD_FIRST
+    );
+
+    foreach ($iterator as $entry) {
+        if ($entry->isDir()) {
+            @rmdir($entry->getRealPath());
+        } else {
+            @unlink($entry->getRealPath());
+        }
+    }
+
+    @rmdir($dir);
+}
+
+$cacheDir = ini_get('opcache.file_cache');
+removeDirRecursive($cacheDir);
+@mkdir($cacheDir, 0777, true);
+
+$tmpPhpFile = __DIR__ . '/gh17770-opcache-target.php';
+file_put_contents($tmpPhpFile, "<?php\nfunction gh17770() { return 42; }\ngh17770();\n");
+
+@opcache_reset();
+opcache_compile_file($tmpPhpFile);
+
+$hasCacheFile = opcache_is_script_cached_in_file_cache($tmpPhpFile);
+
+echo $hasCacheFile ? "OK\n" : "FAIL: opcache file cache is empty\n";
+?>
+--CLEAN--
+<?php
+function removeDirRecursive(string $dir): void {
+    if (!is_dir($dir)) {
+        return;
+    }
+
+    $iterator = new RecursiveIteratorIterator(
+        new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS),
+        RecursiveIteratorIterator::CHILD_FIRST
+    );
+
+    foreach ($iterator as $entry) {
+        if ($entry->isDir()) {
+            @rmdir($entry->getRealPath());
+        } else {
+            @unlink($entry->getRealPath());
+        }
+    }
+
+    @rmdir($dir);
+}
+
+removeDirRecursive(__DIR__ . '/gh17770_cache');
+@unlink(__DIR__ . '/gh17770-opcache-target.php');
+?>
+--EXPECT--
+OK
diff --git a/ext/opcache/zend_file_cache.c b/ext/opcache/zend_file_cache.c
index 3114e5b92712c..4c92c7723a5b9 100644
--- a/ext/opcache/zend_file_cache.c
+++ b/ext/opcache/zend_file_cache.c
@@ -637,6 +637,10 @@ static void zend_file_cache_serialize_op_array(zend_op_array            *op_arra
 					/* relative extended_value don't have to be changed */
 					break;
 			}
+#endif
+#ifdef HAVE_JIT
+			/* Re-normalize handlers before serializing to avoid storing JIT runtime handlers. */
+			ZEND_VM_SET_OPCODE_HANDLER(opline);
 #endif
 			zend_serialize_opcode_handler(opline);
 			opline++;
@@ -1152,15 +1156,19 @@ int zend_file_cache_script_store(zend_persistent_script *script, bool in_shm)
 	char *filename;
 	zend_file_cache_metainfo info;
 	void *mem, *buf;
-
 #ifdef HAVE_JIT
-	/* FIXME: dump jited codes out to file cache? */
-	if (JIT_G(on)) {
-		return FAILURE;
+	bool orig_jit_on = JIT_G(on);
+
+	/* File cache stores bytecode/metadata only; JIT code is rebuilt at runtime. */
+	if (orig_jit_on) {
+		JIT_G(on) = 0;
 	}
 #endif
 
 	if (ZCG(accel_directives).file_cache_read_only) {
+#ifdef HAVE_JIT
+		JIT_G(on) = orig_jit_on;
+#endif
 		return FAILURE;
 	}
 
@@ -1169,6 +1177,9 @@ int zend_file_cache_script_store(zend_persistent_script *script, bool in_shm)
 	if (zend_file_cache_mkdir(filename, strlen(ZCG(accel_directives).file_cache)) != SUCCESS) {
 		zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot create directory for file '%s', %s\n", filename, strerror(errno));
 		efree(filename);
+#ifdef HAVE_JIT
+		JIT_G(on) = orig_jit_on;
+#endif
 		return FAILURE;
 	}
 
@@ -1178,12 +1189,18 @@ int zend_file_cache_script_store(zend_persistent_script *script, bool in_shm)
 			zend_accel_error(ACCEL_LOG_WARNING, "opcache cannot create file '%s', %s\n", filename, strerror(errno));
 		}
 		efree(filename);
+#ifdef HAVE_JIT
+		JIT_G(on) = orig_jit_on;
+#endif
 		return FAILURE;
 	}
 
 	if (zend_file_cache_flock(fd, LOCK_EX) != 0) {
 		close(fd);
 		efree(filename);
+#ifdef HAVE_JIT
+		JIT_G(on) = orig_jit_on;
+#endif
 		return FAILURE;
 	}
 
@@ -1227,6 +1244,9 @@ int zend_file_cache_script_store(zend_persistent_script *script, bool in_shm)
 		efree(mem);
 		zend_file_cache_unlink(filename);
 		efree(filename);
+#ifdef HAVE_JIT
+		JIT_G(on) = orig_jit_on;
+#endif
 		return FAILURE;
 	}
 
@@ -1237,6 +1257,9 @@ int zend_file_cache_script_store(zend_persistent_script *script, bool in_shm)
 	}
 	close(fd);
 	efree(filename);
+#ifdef HAVE_JIT
+	JIT_G(on) = orig_jit_on;
+#endif
 
 	return SUCCESS;
 }