diff --git a/configure.in b/configure.in
index 16ab0a1..a0fca94 100644
--- a/configure.in
+++ b/configure.in
@@ -207,7 +207,7 @@ if test "$have_stacktrace" = "yes"; then
                  [AC_MSG_RESULT([OK, found cplus_demangle])],
 [AC_MSG_ERROR([Function cplus_demangle not found!
  - I looked in libdemangle and libiberty
- - Try "ls -l /usr/lib/libdemangle* /usr/lib/libiberty*"
+ - Try "find /usr/lib -name 'libdemangle*' -o -name 'libiberty*'"
     - is one of them installed?
        - If yes, try: "nm <filename> | grep cplus_demangle"
           -> is the symbol defined?
diff --git a/debian/control.in b/debian/control.in
index 0813391..3d5bc88 100644
--- a/debian/control.in
+++ b/debian/control.in
@@ -1,7 +1,7 @@
 Source: mrw-c++
 Priority: extra
 Maintainer: Marc Wäckerlin (http://marc.waeckerlin.org) <marc@waeckerlin.org>
-Build-Depends: debhelper (>= 7), autotools-dev, libiberty-dev | binutils-dev, libboost-thread-dev
+Build-Depends: debhelper (>= 7), pkg-config, autotools-dev, doxygen, graphviz, lsb-release, libiberty-dev, binutils-dev, libboost-thread-dev, zlib1g-dev
 Standards-Version: 3.8.1
 Section: libs
 Homepage: https://dev.marc.waeckerlin.org/projects/mrw-c++