diff --git a/configure.ac b/configure.ac
index ff777d516..d38607d8e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -77,7 +77,7 @@ AC_SUBST([ABI_AGE])
 AM_CPPFLAGS="${AM_CPPFLAGS} -DIN_HAMLIB"
 
 # Add Hamlib header include paths
-AM_CPPFLAGS="${AM_CPPFLAGS} -I\$(top_srcdir)/include -I\$(top_srcdir)/src -I\$(top_srcdir)/lib -I\$(top_builddir)/include"
+AM_CPPFLAGS="${AM_CPPFLAGS} -I\$(top_srcdir)/include -I\$(top_srcdir)/src -I\$(top_srcdir)/lib -I\$(top_builddir)/include  -I\$(top_srcdir)/include/hamlib"
 
 
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