3 files changed, 10 insertions, 10 deletions
diff --git a/ext/monitor/depend b/ext/monitor/depend
index a8fca7f0b7..bc7ead0d32 100644
--- a/ext/monitor/depend
+++ b/ext/monitor/depend
@@ -13,6 +13,7 @@ monitor.o: $(hdrdir)/ruby/backward/2/stdalign.h
 monitor.o: $(hdrdir)/ruby/backward/2/stdarg.h
 monitor.o: $(hdrdir)/ruby/defines.h
 monitor.o: $(hdrdir)/ruby/intern.h
+monitor.o: $(hdrdir)/ruby/internal/abi.h
 monitor.o: $(hdrdir)/ruby/internal/anyargs.h
 monitor.o: $(hdrdir)/ruby/internal/arithmetic.h
 monitor.o: $(hdrdir)/ruby/internal/arithmetic/char.h
@@ -50,6 +51,7 @@ monitor.o: $(hdrdir)/ruby/internal/attr/noexcept.h
 monitor.o: $(hdrdir)/ruby/internal/attr/noinline.h
 monitor.o: $(hdrdir)/ruby/internal/attr/nonnull.h
 monitor.o: $(hdrdir)/ruby/internal/attr/noreturn.h
+monitor.o: $(hdrdir)/ruby/internal/attr/packed_struct.h
 monitor.o: $(hdrdir)/ruby/internal/attr/pure.h
 monitor.o: $(hdrdir)/ruby/internal/attr/restrict.h
 monitor.o: $(hdrdir)/ruby/internal/attr/returns_nonnull.h
@@ -109,7 +111,6 @@ monitor.o: $(hdrdir)/ruby/internal/intern/enumerator.h
 monitor.o: $(hdrdir)/ruby/internal/intern/error.h
 monitor.o: $(hdrdir)/ruby/internal/intern/eval.h
 monitor.o: $(hdrdir)/ruby/internal/intern/file.h
-monitor.o: $(hdrdir)/ruby/internal/intern/gc.h
 monitor.o: $(hdrdir)/ruby/internal/intern/hash.h
 monitor.o: $(hdrdir)/ruby/internal/intern/io.h
 monitor.o: $(hdrdir)/ruby/internal/intern/load.h
@@ -140,12 +141,12 @@ monitor.o: $(hdrdir)/ruby/internal/memory.h
 monitor.o: $(hdrdir)/ruby/internal/method.h
 monitor.o: $(hdrdir)/ruby/internal/module.h
 monitor.o: $(hdrdir)/ruby/internal/newobj.h
-monitor.o: $(hdrdir)/ruby/internal/rgengc.h
 monitor.o: $(hdrdir)/ruby/internal/scan_args.h
 monitor.o: $(hdrdir)/ruby/internal/special_consts.h
 monitor.o: $(hdrdir)/ruby/internal/static_assert.h
 monitor.o: $(hdrdir)/ruby/internal/stdalign.h
 monitor.o: $(hdrdir)/ruby/internal/stdbool.h
+monitor.o: $(hdrdir)/ruby/internal/stdckdint.h
 monitor.o: $(hdrdir)/ruby/internal/symbol.h
 monitor.o: $(hdrdir)/ruby/internal/value.h
 monitor.o: $(hdrdir)/ruby/internal/value_type.h
diff --git a/ext/monitor/lib/monitor.rb b/ext/monitor/lib/monitor.rb
index 11c5ac17d9..31d6d2b3c4 100644
--- a/ext/monitor/lib/monitor.rb
+++ b/ext/monitor/lib/monitor.rb
@@ -7,17 +7,19 @@
 # You can freely distribute/modify this library.
 #
 
+require 'monitor.so'
+
 #
 # In concurrent programming, a monitor is an object or module intended to be
-# used safely by more than one thread.  The defining characteristic of a
-# monitor is that its methods are executed with mutual exclusion.  That is, at
+# used safely by more than one thread. The defining characteristic of a
+# monitor is that its methods are executed with mutual exclusion. That is, at
 # each point in time, at most one thread may be executing any of its methods.
 # This mutual exclusion greatly simplifies reasoning about the implementation
 # of monitors compared to reasoning about parallel code that updates a data
 # structure.
 #
 # You can read more about the general principles on the Wikipedia page for
-# Monitors[https://en.wikipedia.org/wiki/Monitor_%28synchronization%29]
+# Monitors[https://en.wikipedia.org/wiki/Monitor_%28synchronization%29].
 #
 # == Examples
 #
@@ -48,7 +50,7 @@
 #   end
 #
 # The consumer thread waits for the producer thread to push a line to buf
-# while <tt>buf.empty?</tt>.  The producer thread (main thread) reads a
+# while <tt>buf.empty?</tt>. The producer thread (main thread) reads a
 # line from ARGF and pushes it into buf then calls <tt>empty_cond.signal</tt>
 # to notify the consumer thread of new data.
 #
@@ -86,9 +88,6 @@
 # This Class is implemented as subclass of Array which includes the
 # MonitorMixin module.
 #
-
-require 'monitor.so'
-
 module MonitorMixin
   #
   # FIXME: This isn't documented in Nutshell.
diff --git a/ext/monitor/monitor.c b/ext/monitor/monitor.c
index 10209cf2aa..86613f6ade 100644
--- a/ext/monitor/monitor.c
+++ b/ext/monitor/monitor.c
@@ -102,7 +102,7 @@ monitor_exit(VALUE monitor)
 
     struct rb_monitor *mc = monitor_ptr(monitor);
 
-    if (mc->count <= 0) rb_bug("monitor_exit: count:%d\n", (int)mc->count);
+    if (mc->count <= 0) rb_bug("monitor_exit: count:%d", (int)mc->count);
     mc->count--;
 
     if (mc->count == 0) {