diff --git a/src/driver/slbt_driver_ctx.c b/src/driver/slbt_driver_ctx.c
index bbc1dd9..50c1a9b 100644
--- a/src/driver/slbt_driver_ctx.c
+++ b/src/driver/slbt_driver_ctx.c
@@ -948,6 +948,9 @@ int slbt_get_driver_ctx(
 	if (slbt_driver_parse_tool_argv(ctx->cctx.host.ranlib,&ctx->host.ranlib_argv) < 0)
 		return slbt_get_driver_ctx_fail(&ctx->ctx,0);
 
+	if (slbt_driver_parse_tool_argv(ctx->cctx.host.as,&ctx->host.as_argv) < 0)
+		return slbt_get_driver_ctx_fail(&ctx->ctx,0);
+
 	/* flavor settings */
 	slbt_init_flavor_settings(
 		&ctx->cctx,0,
diff --git a/src/internal/slibtool_lconf_impl.c b/src/internal/slibtool_lconf_impl.c
index 5daa2f4..93dc2d3 100644
--- a/src/internal/slibtool_lconf_impl.c
+++ b/src/internal/slibtool_lconf_impl.c
@@ -825,12 +825,15 @@ int slbt_get_lconf_flags(
 
 	/* as tool (optional) */
 	if (!ctx->cctx.host.as) {
-		if (!slbt_get_lconf_var(addr,cap,"AS=",0,&val)) {
-			if (val[0] && !(ctx->host.as = strdup(val)))
-				return SLBT_SYSTEM_ERROR(dctx,0);
+		if (slbt_get_lconf_var(addr,cap,"AS=",0x20,&val) < 0)
+			return SLBT_CUSTOM_ERROR(
+				dctx,SLBT_ERR_LCONF_PARSE);
 
-			ctx->cctx.host.as = ctx->host.as;
-		}
+		if (val[0] && !(ctx->host.as = strdup(val)))
+			return SLBT_SYSTEM_ERROR(dctx,0);
+
+
+		ctx->cctx.host.as = ctx->host.as;
 	}