diff --git a/topography/Makefile.am b/topography/Makefile.am
index ee71108ac1..14a2249b8c 100644
--- a/topography/Makefile.am
+++ b/topography/Makefile.am
@@ -23,7 +23,8 @@
 # Ed Hartnett 2/22/19
 
 # Include .h and .mod files.
-AM_CPPFLAGS = -I$(top_srcdir)/topography/include
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_srcdir)/topography/include
+
 AM_FCFLAGS = $(FC_MODINC). $(FC_MODOUT)$(MODDIR)
 
 # Build these uninstalled convenience libraries.