diff --git a/src/project.conf b/src/project.conf
index d600c3b..f439783 100644
--- a/src/project.conf
+++ b/src/project.conf
@@ -2,9 +2,9 @@ targets=pdfviewer
 cppflags_force=-I $(PREFIX)/include
 #cppflags=-D EMBEDDED
 cflags_force=-W `pkg-config --cflags libDesktop poppler-glib`
-cflags=-Wall -g -O2 -pedantic -fPIC -fstack-protector
+cflags=-Wall -g -O2 -pedantic -fPIE -D_FORTIFY_SOURCE=2 -fstack-protector-all
 ldflags_force=`pkg-config --libs libDesktop poppler-glib` -lm
-ldflags=-Wl,-pie
+ldflags=-Wl,-pie -Wl,-z,relro -Wl,-z,now
 dist=Makefile,callbacks.h,pdfviewer.h
 
 [pdfviewer]