diff --git a/configure.ac b/configure.ac
index e1d01c6..72a5019 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@ LT_INIT
 
 AC_CANONICAL_HOST
 AM_CONDITIONAL(LD_ISCSI,
-               [expr "$host_os" : linux > /dev/null 2>&1])
+               [false])
 AM_PROG_CC_C_O
 
 enable_write_strings="yes"