diff --git a/frontends/Makefile.hts b/frontends/Makefile.hts
index 1915b3592..b5af240f1 100644
--- a/frontends/Makefile.hts
+++ b/frontends/Makefile.hts
@@ -106,7 +106,7 @@ else
       else
         ifeq ($(TARGET),amigaos3)
           override TARGET := amiga
-          SUBTARGET = os3	
+          SUBTARGET = os3
         endif
       endif
     endif