diff --git a/src/main.c b/src/main.c
index ad1a079..136e37b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -49,7 +49,7 @@ int main(int argc, char **argv)
     scheduler0 = (Scheduler_t*) calloc(1, sizeof(Scheduler_t));
 
     scheduler0->globalDrawingSpace =
-        (ArrowArray_t*) calloc(1, sizeof(IntArray_t));
+        (ArrowArray_t*) calloc(1, sizeof(ArrowArray_t));
     scheduler0->globalDrawingSpace->space =
         (Arrow_t*) calloc(SPACE_SIZE, sizeof(Arrow_t));
     scheduler0->globalDrawingSpace->size = SPACE_SIZE;