diff --git a/configure.in b/configure.in
index a9fce574..8a09aa90 100644
--- a/configure.in
+++ b/configure.in
@@ -53,6 +53,7 @@ AC_ARG_ENABLE(debug,[  --enable-debug          Enable debug mode],[
    AC_CHECK_LIB(curses, initscr, have_curses_lib=yes, , )
 
    if test x$have_curses_lib = xyes -a x$have_curses_h = xyes ; then
+    LIBS="$LIBS -lcurses"
      AC_DEFINE(C_DEBUG,1)
    else 
      AC_MSG_WARN([Can't enable debug mode without libcurses])
@@ -65,6 +66,7 @@ AC_ARG_ENABLE(shots,[  --enable-shots          Enable screenshot support],[
   AC_CHECK_LIB(png, png_check_sig, have_png_lib=yes, , -lz)
 
   if test x$have_curses_lib = xyes -a x$have_curses_h = xyes ; then
+    LIBS="$LIBS -lpng"
     AC_DEFINE(C_SSHOTS,1)
   else 
     AC_MSG_WARN([Can't enable screenshots without libpng])