diff --git a/appl/ftp/common/Makefile.am b/appl/ftp/common/Makefile.am
index edbdeca00..97cd9c3ad 100644
--- a/appl/ftp/common/Makefile.am
+++ b/appl/ftp/common/Makefile.am
@@ -2,9 +2,12 @@
 
 AUTOMAKE_OPTIONS = foreign no-dependencies
 
+CFLAGS = $(WFLAGS) @CFLAGS@
+
 INCLUDES = $(INCLUDE_krb4) 
 
 noinst_LIBRARIES = libcommon.a
+
 libcommon_a_SOURCES = \
 	glob.c \
 	sockbuf.c \