diff --git a/dovecot-pigeonhole.m4 b/dovecot-pigeonhole.m4
index ac93a4a7e57603f250de1e6f1b36fb0e4e5da904..aa03efa9587e71f405f6122b20272d1657b2b885 100644
--- a/dovecot-pigeonhole.m4
+++ b/dovecot-pigeonhole.m4
@@ -1,7 +1,7 @@
 # pigeonhole.m4 - Check presence of pigeonhole -*-Autoconf-*-
 #.
 
-# serial 3
+# serial 4
 
 AC_DEFUN([DC_PIGEONHOLE],[
 	AC_ARG_WITH(pigeonhole,
@@ -35,9 +35,7 @@ AC_DEFUN([DC_PIGEONHOLE],[
 			-I$(pigeonhole_incdir)/src/lib-sieve/plugins/imap4flags \
 			-I$(pigeonhole_incdir)/src/lib-sieve/plugins/mailbox \
 			-I$(pigeonhole_incdir)/src/lib-sieve/plugins/variables'
-		if test -f "$pigeonholedir/src/testsuite/testsuite"; then
-			PIGEONHOLE_TESTSUITE="${pigeonholedir}/src/testsuite/testsuite"
-  		fi
+		PIGEONHOLE_TESTSUITE="${pigeonholedir}/src/testsuite/testsuite"
 	elif test -f "$pigeonholedir/sieve.h"; then
 		AC_MSG_RESULT([found])
 		pigeonhole_incdir="$pigeonholedir"