diff --git a/debian/rules b/debian/rules
index aa1af76..af64dd8 100755
--- a/debian/rules
+++ b/debian/rules
@@ -42,6 +42,7 @@ configure-stamp:
 		--prefix=/usr \
 		--enable-usbdropdir=/usr/lib/pcsc/drivers \
 		INSTALL_PROGRAM="$(INSTALL_PROGRAM)" \
+		CFLAGS="${CFLAGS}" \
 		LDFLAGS="-lpthread"
 
 	touch configure-stamp