diff --git a/libdkim2-x/debian/control.in b/libdkim2-x/debian/control.in
index 97966bd23a..d74fa7fcb8 100644
--- a/libdkim2-x/debian/control.in
+++ b/libdkim2-x/debian/control.in
@@ -10,6 +10,8 @@ Package: libdkim2
 Section: libs
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
+Conflicts: libdkim
+Replaces: libdkim
 Description: cryptographically identify the sender of email
  DomainKeys Identified Mail (DKIM) defines a domain-level
  authentication framework for email using public-key cryptography and
diff --git a/libdkim2-x/libdkim2.spec.in b/libdkim2-x/libdkim2.spec.in
index 60e19e596e..941d4cc111 100644
--- a/libdkim2-x/libdkim2.spec.in
+++ b/libdkim2-x/libdkim2.spec.in
@@ -59,6 +59,7 @@ Source1: http://downloads.sourceforge.net/indimail/libdkim2-rpmlintrc
 
 URL: https://github.com/mbhangui/indimail-mta
 #AutoReqProv: No
+Conflicts: libdkim
 BuildRequires: gcc gcc-c++ make autoconf automake libtool pkgconfig
 BuildRequires: findutils diffutils gzip coreutils
 BuildRequires: glibc glibc-devel binutils