diff --git a/cv3/program.c b/cv3/program.c
index 255cf7c..bc278e0 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -3,7 +3,7 @@
 #include <stdlib.h>
 #include <ctype.h>
 //// @ 
-#define STACK_SIZE 11
+#define STACK_SIZE 10
 
 struct Stack
 {