diff --git a/config/powerpc-ibm-aix4.3.2.0 b/config/powerpc-ibm-aix4.3.2.0
index cf5b0edae5..ebfc2a1fc1 100644
--- a/config/powerpc-ibm-aix4.3.2.0
+++ b/config/powerpc-ibm-aix4.3.2.0
@@ -39,7 +39,6 @@ hdf5_cv_printf_ll=${hdf5_cv_printf_ll='ll'}
 ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
 ac_cv_header_stdc=${ac_cv_header_stdc='yes'}
 ac_cv_header_sys_ioctl_h=${ac_cv_header_sys_ioctl_h=yes}
-ac_cv_path_install=${ac_cv_path_install='cp -r'}
 RUNPARALLEL="MP_PROCS=2 poe"
 
 # cache the sizeof of "standard C types" so that configure can run faster.