diff --git a/ext/opcache/ZendAccelerator.c b/ext/opcache/ZendAccelerator.c
index 96a400ee29c3a..0bd55d319e31e 100644
--- a/ext/opcache/ZendAccelerator.c
+++ b/ext/opcache/ZendAccelerator.c
@@ -1809,13 +1809,20 @@ static zend_persistent_script *opcache_compile_file(zend_file_handle *file_handl
 	zend_try {
 		orig_compiler_options = CG(compiler_options);
 		CG(compiler_options) |= ZEND_COMPILE_HANDLE_OP_ARRAY;
-		CG(compiler_options) |= ZEND_COMPILE_IGNORE_INTERNAL_CLASSES;
 		CG(compiler_options) |= ZEND_COMPILE_DELAYED_BINDING;
 		CG(compiler_options) |= ZEND_COMPILE_NO_CONSTANT_SUBSTITUTION;
 		CG(compiler_options) |= ZEND_COMPILE_IGNORE_OTHER_FILES;
 		CG(compiler_options) |= ZEND_COMPILE_IGNORE_OBSERVER;
+#ifdef ZEND_WIN32
+		/* On Windows, don't compile with internal classes. Shm may be attached from different
+		 * processes with internal classes living in different addresses. */
+		CG(compiler_options) |= ZEND_COMPILE_IGNORE_INTERNAL_CLASSES;
+#endif
 		if (ZCG(accel_directives).file_cache) {
 			CG(compiler_options) |= ZEND_COMPILE_WITH_FILE_CACHE;
+			/* Don't compile with internal classes for file cache, in case some extension is removed
+			 * later on. We cannot assume it is there in the future. */
+			CG(compiler_options) |= ZEND_COMPILE_IGNORE_INTERNAL_CLASSES;
 		}
 		op_array = *op_array_p = accelerator_orig_compile_file(file_handle, type);
 		CG(compiler_options) = orig_compiler_options;