diff --git a/devel/autoconf/Makefile b/devel/autoconf/Makefile
index 09cb64088c84..da2b8dde268b 100644
--- a/devel/autoconf/Makefile
+++ b/devel/autoconf/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	autoconf
 PORTVERSION=	2.69
+PORTREVISION=	1
 CATEGORIES=	devel
 MASTER_SITES=	GNU
 DISTNAME=	autoconf-${PORTVERSION}
diff --git a/devel/autoconf/files/patch-bin-autoscan.in b/devel/autoconf/files/patch-bin-autoscan.in
new file mode 100644
index 000000000000..a55345cc5593
--- /dev/null
+++ b/devel/autoconf/files/patch-bin-autoscan.in
@@ -0,0 +1,11 @@
+--- bin/autoscan.in.orig	2012-04-25 02:37:26 UTC
++++ bin/autoscan.in
+@@ -358,7 +358,7 @@ sub scan_sh_file ($)
+     {
+       # Strip out comments and variable references.
+       s/#.*//;
+-      s/\${[^\}]*}//g;
++      s/\$\{[^\}]*}//g;
+       s/@[^@]*@//g;
+ 
+       # Tokens in the code.