diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index e55aef8e7f9..eae9c5f5bd3 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -13,6 +13,7 @@ CONFIG_SYS_MEMTEST_START=0x00100000
 CONFIG_SYS_MEMTEST_END=0x00101000
 CONFIG_ULIB=y
 CONFIG_MCHECK_HEAP_PROTECTION=y
+CONFIG_MCHECK_CALLER_LEN=80
 CONFIG_EXAMPLES=y
 CONFIG_EFI_SECURE_BOOT=y
 CONFIG_EFI_RT_VOLATILE_STORE=y