diff --git a/atcoder/modint.hpp b/atcoder/modint.hpp
index a00a650..576202b 100644
--- a/atcoder/modint.hpp
+++ b/atcoder/modint.hpp
@@ -47,7 +47,6 @@ struct static_modint : internal::static_modint_base {
     static_modint(T v) {
         _v = (unsigned int)(v % umod());
     }
-    static_modint(bool v) { _v = ((unsigned int)(v) % umod()); }
 
     unsigned int val() const { return _v; }
 
@@ -165,7 +164,6 @@ template <int id> struct dynamic_modint : internal::modint_base {
     dynamic_modint(T v) {
         _v = (unsigned int)(v % mod());
     }
-    dynamic_modint(bool v) { _v = ((unsigned int)(v) % mod()); }
 
     unsigned int val() const { return _v; }