diff --git a/m4/shout.m4 b/m4/shout.m4
index 07e18066..60b32b16 100644
--- a/m4/shout.m4
+++ b/m4/shout.m4
@@ -35,8 +35,8 @@ AC_ARG_ENABLE(shouttest, [  --disable-shouttest       Do not try to compile and
   if test "x$enable_shouttest" = "xyes" ; then
     ac_save_CFLAGS="$CFLAGS"
     ac_save_LIBS="$LIBS"
-    CFLAGS="$CFLAGS $SHOUT_CFLAGS"
-    LIBS="$LIBS $SHOUT_LIBS"
+    CFLAGS="$CFLAGS $SHOUT_CFLAGS $OGG_CFLAGS $VORBIS_CFLAGS"
+    LIBS="$LIBS $SHOUT_LIBS $OGG_LIBS $VORBIS_LIBS"
 dnl
 dnl Now check if the installed Shout is sufficiently new.
 dnl
@@ -67,8 +67,8 @@ int main ()
        :
      else
        echo "*** Could not run Shout test program, checking why..."
-       CFLAGS="$CFLAGS $SHOUT_CFLAGS"
-       LIBS="$LIBS $SHOUT_LIBS"
+       CFLAGS="$CFLAGS $SHOUT_CFLAGS $OGG_CFLAGS $VORBIS_CFLAGS"
+       LIBS="$LIBS $SHOUT_LIBS $OGG_LIBS $VORBIS_LIBS"
        AC_TRY_LINK([
 #include <stdio.h>
 #include <shout/shout.h>