diff --git a/ChangeLog b/ChangeLog
index 183f344d3..22d7f38bc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,12 @@
+Tue Sep 18 13:45:34 BST 2007 (njh)
+----------------------------------
+ * libclamav/regex/regcomp.c:	Fix compilation error on systems without
+		_POSIX2_RE_DUP_MAX (under advice from Edwin)
+
 Mon Sep 17 21:06:59 EEST 2007(edwin)
 ------------------------------------
  * libclamav/regex/: add regcomp(), regexec() impl. from OpenBSD's libc.
- 	This code is licensed under the 3-clause BSD.
+	This code is licensed under the 3-clause BSD.
 	This will be used instead of system provided regexec()/regcomp() to
 	have consistent behaviour across platforms.
 
diff --git a/libclamav/regex/regcomp.c b/libclamav/regex/regcomp.c
index 3d22004f8..5e74949ef 100644
--- a/libclamav/regex/regcomp.c
+++ b/libclamav/regex/regcomp.c
@@ -138,6 +138,12 @@ static char nuls[10];		/* place to point scanner in event of error */
 #define	THERETHERE()	(p->slen - 2)
 #define	DROP(n)	(p->slen -= (n))
 
+#ifdef	_POSIX2_RE_DUP_MAX
+#define	DUPMAX	_POSIX2_RE_DUP_MAX
+#else
+#define	DUPMAX	255
+#endif
+
 #ifndef NDEBUG
 static int never = 0;		/* for use in asserts; shuts lint up */
 #else