--- a/Makefile.in
+++ b/Makefile.in
@@ -9,7 +9,7 @@
install-suid-root: exec_perms = 4755
CC ?= @CC@
-CFLAGS ?= @CFLAGS@ @LIBNL3_CLI_CFLAGS@
+CFLAGS = @CFLAGS@ @LIBNL3_CLI_CFLAGS@
CPPFLAGS ?= @CPPFLAGS@
LDFLAGS ?= @LDFLAGS@
DEFS ?= @DEFS@