diff --git a/configs/qemu_microblazebe_mmu_defconfig b/configs/qemu_microblazebe_mmu_defconfig
index b3ec32fb27..ca18bb906b 100644
--- a/configs/qemu_microblazebe_mmu_defconfig
+++ b/configs/qemu_microblazebe_mmu_defconfig
@@ -9,6 +9,11 @@ BR2_TARGET_GENERIC_GETTY_PORT="ttyUL0"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_ROOTFS_INITRAMFS=y
 
+# Lock to 3.14 headers to avoid breaking with newer kernels
+BR2_KERNEL_HEADERS_VERSION=y
+BR2_DEFAULT_KERNEL_VERSION="3.14.2"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_14=y
+
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
diff --git a/configs/qemu_microblazeel_mmu_defconfig b/configs/qemu_microblazeel_mmu_defconfig
index a00989344c..14feb83973 100644
--- a/configs/qemu_microblazeel_mmu_defconfig
+++ b/configs/qemu_microblazeel_mmu_defconfig
@@ -9,6 +9,11 @@ BR2_TARGET_GENERIC_GETTY_PORT="ttyUL0"
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_ROOTFS_INITRAMFS=y
 
+# Lock to 3.14 headers to avoid breaking with newer kernels
+BR2_KERNEL_HEADERS_VERSION=y
+BR2_DEFAULT_KERNEL_VERSION="3.14.2"
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_14=y
+
 # Kernel
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y