diff --git a/host/asm.awk b/host/asm.awk
index 8c9b842..7880d99 100644
--- a/host/asm.awk
+++ b/host/asm.awk
@@ -138,7 +138,7 @@ function getsym(name) {
     return int(name)
   }
   if (name in r8 || name in r16 || name in sreg) {
-    err("Register name " name "is not a valid immediate")
+    err("Register name " name " is not a valid immediate")
     return 0
   }
   if (substr(name,1,1)==".") name = plabel name