1 files changed, 1 insertions, 1 deletions
diff --git a/compile.c b/compile.c
index 6d596e6af2..b0e4514f4c 100644
--- a/compile.c
+++ b/compile.c
@@ -10,6 +10,7 @@
 **********************************************************************/
 
 #include "ruby/ruby.h"
+#include "internal.h"
 #include <math.h>
 
 #define USE_INSN_STACK_INCREASE 1
@@ -155,7 +156,6 @@ r_value(VALUE value)
 #endif
 
 #if CPDEBUG > 1 || CPDEBUG < 0
-PRINTF_ARGS(void ruby_debug_printf(const char*, ...), 1, 2);
 #define debugs if (compile_debug_print_indent(1)) ruby_debug_printf
 #define debug_compile(msg, v) ((void)(compile_debug_print_indent(1) && fputs((msg), stderr)), (v))
 #else