diff --git a/README.adoc b/README.adoc
index c90ab65..5b9c739 100644
--- a/README.adoc
+++ b/README.adoc
@@ -398,7 +398,7 @@ For example, to do a <<qemu-buildroot-setup>> inside Docker, run:
 ....
 sudo apt-get install docker
 ./run-docker create && \
-./run-docker sh -- ./build --download-dependencies
+./run-docker sh -- ./build --download-dependencies qemu-buildroot
 ./run-docker sh
 ....
 
diff --git a/build-gem5 b/build-gem5
index 0ca4a97..33f7a3e 100755
--- a/build-gem5
+++ b/build-gem5
@@ -69,6 +69,7 @@ class Gem5Component(common.Component):
             common.run_cmd([
                 'make', common.Newline,
                 '-C', bootloader32_dir, common.Newline,
+                'CROSS_COMPILE=arm-linux-gnueabihf-', common.Newline,
             ])
             # bootloader
             common.cp(os.path.join(bootloader32_dir, 'boot_emm.arm'), binaries_dir)