1 files changed, 3 insertions, 2 deletions

diff --git a/src/controller/exp004mouse.c b/src/controller/exp004mouse.c
index 2440c3a..0f3e9d3 100644
--- a/src/controller/exp004mouse.c
+++ b/src/controller/exp004mouse.c
@@ -8,6 +8,7 @@
 #include "../util/pick_convert.h"
 #include <GL/glut.h>
 #include <math.h>
+#include <stdlib.h>
 
 /*
  * A simple alias to make the code more readable.
@@ -86,8 +87,8 @@ exp004mouse (int button, int state, int x, int y)
            * "Specify the array to be used for the returned hit records
            * with glSelectBuffer () [Redbook]."
            */
-          GLuint select_buf[ROWS];
-          glSelectBuffer (ROWS, select_buf);
+          GLuint* select_buf = calloc (S.rows, sizeof (GLuint));
+          glSelectBuffer (S.rows, select_buf);
 
           /*
            * "Enter selection mode by specifying GL_SELECT with