diff --git a/const_bsds.go b/const_bsds.go
index 5728243..18b4582 100644
--- a/const_bsds.go
+++ b/const_bsds.go
@@ -11,7 +11,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// +build darwin openbsd freebsd netbsd dragonfly
+// +build aix darwin openbsd freebsd netbsd dragonfly
 
 package afero
 
diff --git a/const_win_unix.go b/const_win_unix.go
index 968fc27..2b850e4 100644
--- a/const_win_unix.go
+++ b/const_win_unix.go
@@ -15,6 +15,7 @@
 // +build !freebsd
 // +build !dragonfly
 // +build !netbsd
+// +build !aix
 
 package afero