dpkg-buildflags(1): Escape minus sign

man/dpkg-buildflags.1

@@ -1,4 +1,4 @@
-.TH dpkg\-buildflags 1 "2011-09-07" "Debian Project" "dpkg suite"
+.TH dpkg\-buildflags 1 "2011-09-09" "Debian Project" "dpkg suite"
 .SH NAME
 dpkg\-buildflags \- returns build flags to use during package build
 .
@@ -181,7 +181,7 @@ The special feature \fBall\fP can be used to enable or disable all
 hardening features at the same time. Thus disabling everything and
 enabling only "format" and "fortify" can be achieved with:
 .P
-  export DEB_BUILD_MAINT_OPTIONS="hardening=-all,+format,+fortify"
+  export DEB_BUILD_MAINT_OPTIONS="hardening=\-all,+format,+fortify"
 .
 .TP
 .B format