1 files changed, 3 insertions, 0 deletions

diff --git a/configure.in b/configure.in
index c1d324fab36..0ea845f0535 100644
--- a/configure.in
+++ b/configure.in
@@ -605,6 +605,9 @@ case "${canonical}" in
   rs6000-ibm-aix4.2* | powerpc-ibm-aix4.2*  )
     machine=ibmrs6000 opsys=aix4-2
   ;;
+  rs6000-ibm-aix5.1* | powerpc-ibm-aix5.1*  )
+    machine=ibmrs6000 opsys=aix4-2
+  ;;
   rs6000-ibm-aix4.0* | powerpc-ibm-aix4.0*  )
     machine=ibmrs6000 opsys=aix4
   ;;