diff --git a/src/poc/geom.c b/src/poc/geom.c
index a68326d71..5d04ef840 100644
--- a/src/poc/geom.c
+++ b/src/poc/geom.c
@@ -17,7 +17,7 @@ int main(void){
   if(nc == NULL){
     return EXIT_FAILURE;
   }
-  int y, x, dimy, dimx;
+  int dimy, dimx;
   struct ncplane* n = notcurses_stdplane(nc);
   ncplane_dim_yx(n, &dimy, &dimx);
   // leave a 20% total margin on the sides