1 files changed, 4 insertions, 4 deletions
diff --git a/defines.h b/defines.h
index 619edbe283..9b5154e580 100644
--- a/defines.h
+++ b/defines.h
@@ -46,10 +46,10 @@
 #define xrealloc ruby_xrealloc
 #define xfree ruby_xfree
 
-void *xmalloc _((long));
-void *xcalloc _((long,long));
-void *xrealloc _((void*,long));
-void xfree _((void*));
+void *xmalloc(long);
+void *xcalloc(long,long);
+void *xrealloc(void*,long);
+void xfree(void*);
 
 #if SIZEOF_LONG_LONG > 0
 # define LONG_LONG long long