src/graphics-info-modelling.cc | 1 +
 src/graphics-info.cc           | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/src/graphics-info-modelling.cc b/src/graphics-info-modelling.cc
index 05a63ad..4b7d129 100644
--- a/src/graphics-info-modelling.cc
+++ b/src/graphics-info-modelling.cc
@@ -102,6 +102,7 @@
 
 #include "utils/coot-utils.hh"
 
+#include <libguile.h>
 
 // Idealize the geometry without considering the map.
 //
diff --git a/src/graphics-info.cc b/src/graphics-info.cc
index e2f9d52..76b6769 100644
--- a/src/graphics-info.cc
+++ b/src/graphics-info.cc
@@ -92,6 +92,8 @@
 #include "cc-interface-scripting.hh"
 #endif
 
+#include <libguile.h>
+
 // A few non-class members - should be somewhere else, I guess.
 // 
 void initialize_graphics_molecules() {