diff --git a/aclocal.m4 b/aclocal.m4
index 91cdd40b136df066d1f37063653f4351d7b0225c..7c85e062b6dd59e4ab1c7fe58fea16029f0dc9cc 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1869,6 +1869,9 @@ case "$1" in
   mips*)
     $2="mips"
     ;;
+  nios2)
+    $2="nios2"
+    ;;
   powerpc64le*)
     $2="powerpc64le"
     ;;