diff --git a/Geometry/spherical.c b/Geometry/spherical.c
index 3eb0d96..f4b6b6d 100644
--- a/Geometry/spherical.c
+++ b/Geometry/spherical.c
@@ -1,7 +1,7 @@
 
 #include "../paul.h"
 
-double get_dL( double * xp , double * xm , double dx , int dim ){
+double get_dL( double * xp , double * xm , int dim ){
    double r  = .5*(xp[0]+xm[0]);
    double th = .5*(xp[1]+xm[1]);
    if( dim==0 ) return( xp[0]-xm[0] );