diff --git a/gnu/libexec/uucp/common_sources/conf.h b/gnu/libexec/uucp/common_sources/conf.h
index c0eacf68f8c..9053c4423e0 100644
--- a/gnu/libexec/uucp/common_sources/conf.h
+++ b/gnu/libexec/uucp/common_sources/conf.h
@@ -339,7 +339,7 @@
 
 /* The code will use one of the following functions when detaching
    from a terminal.  One of these must exist.  */
-#define HAVE_SETPGRP 1
+#define HAVE_SETPGRP 0
 #define HAVE_SETSID 1
 
 /* If you do not specify the local node name in the main configuration