diff --git a/src/pike_macros.h b/src/pike_macros.h
index 19c37df26c65f08055a09a6ff7327d9fab001ab3..5e2d091869dea6d9fd2f788a2f4ba9f83aa05ac7 100644
--- a/src/pike_macros.h
+++ b/src/pike_macros.h
@@ -5,7 +5,7 @@
 \*/
 
 /*
- * $Id: pike_macros.h,v 1.8 1998/05/05 22:01:41 grubba Exp $
+ * $Id: pike_macros.h,v 1.9 1998/05/17 22:59:18 grubba Exp $
  */
 #ifndef MACROS_H
 #define MACROS_H
@@ -48,6 +48,10 @@
   
 #define isidchar(X) is8bitalnum(X)
 
+#ifndef HAVE_ISGRAPH
+#define isgraph(X)	(ispunct(X) || isupper(X) || islower(X) || isdigit(X))
+#endif /* !HAVE_ISGRAPH */
+
 #define ALIGN_BOUND sizeof(char *)
 
 #ifdef __GNUC__