diff --git a/include/novascon.h b/include/novascon.h
index 393375ca..e1cfe6ad 100644
--- a/include/novascon.h
+++ b/include/novascon.h
@@ -67,4 +67,4 @@ extern const double ANGVEL;
 extern const double RMASS[12];
 
 
-#endif
+#endif /* _CONSTS_ */
diff --git a/src/novas.c b/src/novas.c
index 7496edaf..91f07e6e 100644
--- a/src/novas.c
+++ b/src/novas.c
@@ -1613,12 +1613,10 @@ short place(double jd_tt, const object *source, const observer *location, double
 
     // Variable 'loc' determines whether Earth deflection is included.
     if(loc == NOVAS_OBSERVER_ON_EARTH) {
-      double pog[3], vog[3];
+      double pog[3];
 
-      for(i = 3; --i >= 0;) {
+      for(i = 3; --i >= 0;)
         pog[i] = pob[i] - peb[i];
-        vog[i] = vob[i] - veb[i];
-      }
 
       limb_angle(pos, pog, NULL, &frlimb);
       if(frlimb < 0.8)
diff --git a/src/novascon.c b/src/novascon.c
index 4803dc84..7150b5ab 100644
--- a/src/novascon.c
+++ b/src/novascon.c
@@ -16,6 +16,9 @@
  *  <a href="http://www.usno.navy.mil/USNO/astronomical-applications">http://www.usno.navy.mil/USNO/astronomical-applications</a>
  */
 
+// We shall never use these in the internal API. We define precompiler constants instead...
+#ifndef __NOVAS_INTERNAL_API__
+
 #include "novas.h"
 #include "novascon.h"
 
@@ -33,9 +36,7 @@ const double ANGVEL = NOVAS_EARTH_ANGVEL;
 const double RMASS[12] = NOVAS_RMASS_INIT;
 
 
-
-
-
+#endif /* __NOVAS_INTERNAL_API__ */