diff --git a/src/cpu/qemu-x86/Kconfig b/src/cpu/qemu-x86/Kconfig
index 2f961dca90..73aadfb06c 100644
--- a/src/cpu/qemu-x86/Kconfig
+++ b/src/cpu/qemu-x86/Kconfig
@@ -50,4 +50,7 @@ config MAX_CPUS
 	default 32 if SMM_TSEG
 	default 4
 
+config HEAP_SIZE
+	default 0x8000
+
 endif