diff --git a/src/main.cc b/src/main.cc
index c2da1c1..4536698 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -14,7 +14,7 @@ VALUE svi_ruby_protect_eval_string_rescue(VALUE exception, VALUE exception_objec
     return Qnil;
 }
 
-VALUE ruby_protect_eval_string(const char * ruby_expression, bool * exception)
+VALUE svi_ruby_protect_eval_string(const char * ruby_expression, bool * exception)
 {
     *exception = false;
     return rb_rescue((VALUE(*)(...))rb_eval_string, (VALUE)ruby_expression,
@@ -107,7 +107,7 @@ int main(int argc, char * argv[])
         RUBY_INIT_STACK;
         ruby_init();
         rb_gv_set("$SHARE_DIR", rb_str_new(share_dir.c_str(), share_dir.size()));
-        ruby_protect_eval_string(ruby_startup, &exception);
+        svi_ruby_protect_eval_string(ruby_startup, &exception);
     }
     delete[] ruby_startup;
     return exception ? 1 : 0;