--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@
 
 AC_PREREQ([2.50])
 AC_INIT([shairport-sync], [3.1.2rc0], [mikebrady@eircom.net])
-AM_INIT_AUTOMAKE
+AM_INIT_AUTOMAKE([subdir-objects])
 AC_CONFIG_SRCDIR([shairport.c])
 AC_CONFIG_HEADERS([config.h])
 
@@ -274,7 +274,6 @@
 AC_ARG_WITH(convolution, [  --with-convolution = choose audio DSP convolution support], [
   AC_MSG_RESULT(>>Including convolution support)
   HAS_CONVOLUTION=1
-  AM_INIT_AUTOMAKE([subdir-objects])
   AC_DEFINE([CONFIG_CONVOLUTION], 1, [Needed by the compiler.])
   AC_CHECK_LIB([sndfile], [sf_open], , AC_MSG_ERROR(Convolution support requires the sndfile library!))], )
 AM_CONDITIONAL([USE_CONVOLUTION], [test "x$HAS_CONVOLUTION" = "x1"])