diff --git a/mrbgems/mruby-test-inline-struct/test/inline.c b/mrbgems/mruby-test-inline-struct/test/inline.c
index f3940476b..a54bf2b03 100644
--- a/mrbgems/mruby-test-inline-struct/test/inline.c
+++ b/mrbgems/mruby-test-inline-struct/test/inline.c
@@ -63,7 +63,7 @@ istruct_test_test_receive_direct(mrb_state *mrb, mrb_value self)
      you need to care about class replacing.
      See mrbgem/mruby-random/src/random.c for detail */
   if (mrb_istruct_p(is) && mrb_obj_is_kind_of(mrb, is, klass)) {
-    char *ptr = (char*)mrb_istruct_ptr(is);;
+    char *ptr = (char*)mrb_istruct_ptr(is);
     return mrb_bool_value(ptr[0] == 's');
   }
   mrb_raise(mrb, E_TYPE_ERROR, "InlineStructTest");
diff --git a/src/symbol.c b/src/symbol.c
index 35e489b04..c707a9d98 100644
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -111,7 +111,7 @@ sym_inline_unpack(mrb_sym sym, char *buf, mrb_int *lenp)
   for (i=0; i<5; i++) {
     uint32_t bits = sym>>(24-i*6) & 0x3f;
     if (bits == 0) break;
-    buf[i] = pack_table[bits-1];;
+    buf[i] = pack_table[bits-1];
   }
   buf[i] = '\0';
   if (lenp) *lenp = i;