diff --git a/configure.ac b/configure.ac
index 4703b6a5be3..d4c1fd46cf7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1746,6 +1746,7 @@ AC_ARG_ENABLE([gallium-llvm],
 if test "x$enable_gallium_llvm" = xauto; then
     case "$host_cpu" in
     i*86|x86_64|amd64) enable_gallium_llvm=yes;;
+    *) enable_gallium_llvm=no;;
     esac
 fi