--- a/mcabber/configure.ac	Sat Mar 27 16:17:11 2010 +0100
+++ b/mcabber/configure.ac	Sat Mar 27 16:26:52 2010 +0100
@@ -261,7 +261,7 @@
 fi
 
 AM_CONDITIONAL([OTR], [test x$libotr_found = xyes])
-AM_CONDITIONAL([INSTALL_HEADERS], [test x$enable_modules != xyes])
+AM_CONDITIONAL([INSTALL_HEADERS], [test x$enable_modules != xno])
 
 # Prepare some config.h variables
 AC_DEFINE([MCABBER_BRANCH], "dev", [Mcabber branch])