diff --git a/src/include/cppduals b/src/include/cppduals
new file mode 160000
index 000000000..f96eea60c
--- /dev/null
+++ b/src/include/cppduals
@@ -0,0 +1 @@
+Subproject commit f96eea60ca39c1b45f3a45cfc08a55462de2e315
diff --git a/src/spicelib/devices/hicum2/Makefile.am b/src/spicelib/devices/hicum2/Makefile.am
index 40b1002ac..3d9fe062f 100644
--- a/src/spicelib/devices/hicum2/Makefile.am
+++ b/src/spicelib/devices/hicum2/Makefile.am
@@ -28,6 +28,6 @@ libhicum2_la_SOURCES =	\
 
 AM_CFLAGS   = -O -g -Wall -Wextra -I$(top_srcdir)/src/include
 AM_CPPFLAGS = @AM_CPPFLAGS@ -O -g -Wall -Wextra 
-AM_CXXFLAGS = -I$(top_srcdir)/../cppduals -I$(top_srcdir)/src/include -std=c++11 -O -g -Wall -Wextra
+AM_CXXFLAGS = -I$(top_srcdir)/src/include/cppduals -I$(top_srcdir)/src/include -std=c++11 -O -g -Wall -Wextra
 
 MAINTAINERCLEANFILES = Makefile.in