diff --git a/samples/arch/smp/pi/src/main.c b/samples/arch/smp/pi/src/main.c
index 95937e3b275..e141f8f5f1b 100644
--- a/samples/arch/smp/pi/src/main.c
+++ b/samples/arch/smp/pi/src/main.c
@@ -17,7 +17,7 @@
 #define DIGITS_NUM	240
 
 #define LENGTH		((DIGITS_NUM / 4) * 14)
-#define STACK_SIZE	((LENGTH * sizeof(int) + 1024))
+#define STACK_SIZE	((LENGTH * sizeof(int) + 1280))
 
 #ifdef CONFIG_SMP
 #define CORES_NUM	arch_num_cpus()