diff --git a/c_check b/c_check
index 8234c2081..dd700b8b4 100644
--- a/c_check
+++ b/c_check
@@ -6,6 +6,7 @@
 # Checking cross compile
 $hostos   = `uname -s | sed -e s/\-.*//`;    chop($hostos);
 $hostarch = `uname -m | sed -e s/i.86/x86/`;chop($hostarch);
+$hostarch = `uname -p` if ($hostos eq "AIX");
 $hostarch = "x86_64" if ($hostarch eq "amd64");
 $hostarch = "arm" if ($hostarch =~ /^arm.*/);
 $hostarch = "arm64" if ($hostarch eq "aarch64");