diff --git a/libs/libzrtp/configure.in b/libs/libzrtp/configure.in
index 7038210c66..963a95dd71 100644
--- a/libs/libzrtp/configure.in
+++ b/libs/libzrtp/configure.in
@@ -89,8 +89,10 @@ if test -z "$DOXYGEN";
    then AC_MSG_WARN([Doxygen not found - continuing without Doxygen support])
 fi
 
-AM_CONDITIONAL([HAVE_DOXYGEN], [test -n "$DOXYGEN"])
-AM_COND_IF([HAVE_DOXYGEN], [AC_CONFIG_FILES([doc/Doxyfile])])
+if test -n "$DOXYGEN"; then
+  AM_CONDITIONAL([HAVE_DOXYGEN], [true])
+  AC_CONFIG_FILES([doc/Doxyfile])
+fi
 
 #
 # Generate Makefiles