diff --git a/src/Makefile b/src/Makefile
index 7b02d19..0a499d7 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,10 +2,10 @@ DESTDIR ?=
PREFIX ?= /usr/local
BINDIR = $(PREFIX)/bin
SHAREDIR = $(PREFIX)/share/imapfilter
-MANDIR = $(PREFIX)/man
+MANDIR = $(PREFIX)/share/man
SSLCAPATH = /etc/ssl/certs
-SSLCAFILE = /etc/ssl/cert.pem
+SSLCAFILE = $(SSLCAPATH)/ca-bundle.crt
MYCFLAGS =
MYLDFLAGS =
@@ -19,7 +19,7 @@ LIBPCRE = -lpcre2-8
LIBSSL = -lssl
LIBCRYPTO = -lcrypto
-CFLAGS = -Wall -Wextra -O \
+CFLAGS += -Wall -Wextra -O \
-DCONFIG_SHAREDIR='"$(SHAREDIR)"' \
-DCONFIG_SSL_CAPATH='"$(SSLCAPATH)"' \
-DCONFIG_SSL_CAFILE='"$(SSLCAFILE)"' \