diff --git a/obfuscator.hpp b/obfuscator.hpp
index 9e7a4fc..72007c4 100644
--- a/obfuscator.hpp
+++ b/obfuscator.hpp
@@ -153,7 +153,7 @@ namespace obfs {
 
     template <typename Table, std::size_t size>
     constexpr auto make_string(char const (&str)[size]) {
-        using pair = typename Table::index<OBFS_RAND_VAL(Table::size)>;
+        using pair = typename Table::template index<OBFS_RAND_VAL(Table::size)>;
         constexpr Encoder encoder = pair::index<0>::value;
         constexpr Decoder decoder = pair::index<1>::value;
 
diff --git a/obfuscator/obfs/string.hpp b/obfuscator/obfs/string.hpp
index 2e06fdb..cb3719a 100644
--- a/obfuscator/obfs/string.hpp
+++ b/obfuscator/obfs/string.hpp
@@ -51,7 +51,7 @@ namespace obfs {
 
     template <typename Table, std::size_t size>
     constexpr auto make_string(char const (&str)[size]) {
-        using pair = typename Table::index<OBFS_RAND_VAL(Table::size)>;
+        using pair = typename Table::template index<OBFS_RAND_VAL(Table::size)>;
         constexpr Encoder encoder = pair::index<0>::value;
         constexpr Decoder decoder = pair::index<1>::value;