diff --git a/source/mijin/detect.hpp b/source/mijin/detect.hpp
index cc38e80..a856f97 100644
--- a/source/mijin/detect.hpp
+++ b/source/mijin/detect.hpp
@@ -61,6 +61,26 @@ namespace mijin
     #endif
 #endif
 
+#if !defined(MIJIN_RTTI)
+    #if MIJIN_COMPILER == MIJIN_COMPILER_GCC
+        #if defined(__GXX_RTTI)
+            #define MIJIN_RTTI 1
+        #else
+            #define MIJIN_RTTI 0
+        #endif
+    #elif MIJIN_COMPILER == MIJIN_COMPILER_CLANG
+        #define MIJIN_RTTI (__has_feature(cxx_rtti))
+    #elif MIJIN_COMPILER == MIJIN_COMPILER_MSVC
+        #if defined(_CPPRTTI)
+            #define MIJIN_RTTI 1
+        #else
+            #define MIJIN_RTTI 0
+        #endif
+    #else
+        #define MIJIN_RTTI 0
+    #endif
+#endif
+
 //
 // public constants
 //