diff --git a/linker/linker.cpp b/linker/linker.cpp
index cee9c3b..37a3189 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -4208,7 +4208,7 @@
   if (insert_pos == std::string::npos) {
     insert_pos = ld_config_file_vndk.length();
   }
-  ld_config_file_vndk.insert(insert_pos, Config::get_vndk_version_string("."));
+  ld_config_file_vndk.insert(insert_pos, Config::get_vndk_version_string('.'));
   return ld_config_file_vndk;
 }