diff --git a/src/makefile.am b/src/makefile.am
index 584f2d4..02534cd 100644
--- a/src/makefile.am
+++ b/src/makefile.am
@@ -7,7 +7,8 @@
 
 SUBDIRS = qbrowserlib designer
 
-include_HEADERS = @srcdir@/qbrowserlib/*.hxx
+qbrowserlibdir=${includedir}/qbrowserlib
+qbrowserlib_HEADERS = @srcdir@/qbrowserlib/*.hxx
 
 if !MINGW32
 if MAC