diff --git a/circuslinux/Makefile.am b/circuslinux/Makefile.am
index a9a2e2d..facfc58 100644
--- a/circuslinux/Makefile.am
+++ b/circuslinux/Makefile.am
@@ -29,8 +29,8 @@ LIBS    = @LIBS@
 bin_PROGRAMS = circuslinux
 
 circuslinux_SOURCES = circuslinux.c
-circuslinux_CFLAGS  = CFLAGS
-circuslinux_LIBS    = LIBS
+circuslinux_CFLAGS  = $(CFLAGS)
+circuslinux_LIBS    = $(LIBS)
 
 docdir = $(prefix)/share/doc/$(PACKAGE)-$(VERSION)