diff --git a/lib/am/tags.am b/lib/am/tags.am
index 5383e0d..d279b19 100644
--- a/lib/am/tags.am
+++ b/lib/am/tags.am
@@ -26,7 +26,7 @@ ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
 ## Handle VPATH correctly.
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
 	  done | \
-	  $(AWK) '{ files[$$0] = 1; nonemtpy = 1; } \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
 	      END { if (nonempty) { for (i in files) print i; }; }'`; \
 	mkid -fID $$unique