diff --git a/scripts/build-toolchains.sh b/scripts/build-toolchains.sh
index 19fa524e..536a2e57 100755
--- a/scripts/build-toolchains.sh
+++ b/scripts/build-toolchains.sh
@@ -176,7 +176,7 @@ if [ -z "$IGNOREQEMU" ] ; then
     echo "==>  PLEASE REMOVE qemu URL-REWRITING from scripts/build-toolchains.sh. It is no longer needed!" && exit 1
 
     # now actually do the build
-    SRCDIR="$(pwd)/toolchains" module_build qemu --prefix="${RISCV}" --target-list=riscv${XLEN}-softmmu
+    SRCDIR="$(pwd)/toolchains" module_build qemu --prefix="${RISCV}" --target-list=riscv${XLEN}-softmmu --disable-werror
 fi
 
 # make Dromajo