diff --git a/ffi-tools/ffi-tools.h b/ffi-tools/ffi-tools.h
index c4e5bfb..6120129 100644
--- a/ffi-tools/ffi-tools.h
+++ b/ffi-tools/ffi-tools.h
@@ -37,7 +37,7 @@ void ffit_init_hook(void);
 #define FFIT_CHECK_RECORD_TYPE(SCM_VAL, SCM_RECTYPE)			\
   if (!(S48_RECORD_P(SCM_VAL) &&					\
 	(S48_RECORD_TYPE(SCM_VAL) == SCM_RECTYPE)))			\
-    s48_raise_argument_type_error(SCM_VAL)
+    s48_raise_argument_type_error(SCM_VAL);
 
 #define FFIT_STRUCT_GET(FUNNAME, SCM_RECTYPE, C_RECTYPE, C_FIELD, FIELD_SCM_ENTER_FUN) \
 s48_value FUNNAME(s48_value scm_rec) {					\