--- src/interp/i-syscmd.boot.old	2023-06-03 18:26:11.598231562 +0200
+++ src/interp/i-syscmd.boot	2023-06-03 18:31:04.998226579 +0200
@@ -526,9 +526,8 @@
 
     if not beQuiet then sayKeyedMsg("S2IZ0038A", [path, asharpArgs])
 
-    command :=
-       STRCONC(getEnv('"ALDOR_COMPILER"),_
-                     '" ", asharpArgs, '" ", path)
+    acomp := getEnv('"ALDOR_COMPILER") or '"aldor"
+    command := STRCONC(acomp, '" ", asharpArgs, '" ", path)
     rc := OBEY command
 
     if (rc = 0) and doCompileLisp then