diff --git a/main.cc b/main.cc
index 7ccdc48..f1d995c 100644
--- a/main.cc
+++ b/main.cc
@@ -1,5 +1,25 @@
 #include <oniguruma.h>
+#include <stdio.h>
 
 int main(int argc, char * argv[])
 {
+    static OnigEncoding encodings[] = {
+        ONIG_ENCODING_ASCII,
+        ONIG_ENCODING_UTF8,
+        ONIG_ENCODING_UTF16_BE,
+        ONIG_ENCODING_UTF16_LE,
+        ONIG_ENCODING_UTF32_BE,
+        ONIG_ENCODING_UTF32_LE,
+    };
+    int rc = onig_initialize(encodings, sizeof(encodings) / sizeof(encodings[0]));
+    if (rc != ONIG_NORMAL)
+    {
+        OnigErrorInfo einfo;
+        OnigUChar s[ONIG_MAX_ERROR_MESSAGE_LEN];
+        onig_error_code_to_str(s, rc, &einfo);
+        fprintf(stderr, "Error: %s\n", s);
+        return 1;
+    }
+
+    return 0;
 }