diff --git a/0001-Set-slot_num-configuration-parameter-to-0-by-default.patch b/0001-Set-slot_num-configuration-parameter-to-0-by-default.patch
new file mode 100644
index 0000000..21a9a43
--- /dev/null
+++ b/0001-Set-slot_num-configuration-parameter-to-0-by-default.patch
@@ -0,0 +1,39 @@
+From 8da6c472ddcf18a30676bf8f7c55785dd2de91c5 Mon Sep 17 00:00:00 2001
+From: Paul Wolneykien <manowar@altlinux.org>
+Date: Fri, 26 Apr 2024 18:10:24 +0300
+Subject: [PATCH] Set 'slot_num' configuration parameter to 0 by default
+
+See https://github.com/OpenSC/pam_pkcs11/pull/74 for details.
+
+Signed-off-by: Paul Wolneykien <manowar@altlinux.org>
+---
+ src/pam_pkcs11/pam_config.c |   11 +++--------
+ 1 file changed, 3 insertions(+), 8 deletions(-)
+
+--- a/src/pam_pkcs11/pam_config.c
++++ b/src/pam_pkcs11/pam_config.c
+@@ -50,7 +50,7 @@ struct configuration_st configuration =
+         NULL,				/* const char *pkcs11_module_path; */
+         NULL,                           /* screen savers */
+         NULL,			/* slot_description */
+-        -1,				/* int slot_num; */
++        0,				/* int slot_num; */
+ 	0,				/* support threads */
+ 	/* cert policy; */
+         {
+@@ -167,13 +167,8 @@ static void parse_config_file(void) {
+ 	    configuration.slot_num =
+ 	        scconf_get_int(pkcs11_mblk,"slot_num",configuration.slot_num);
+ 
+-	    if (configuration.slot_description != NULL && configuration.slot_num != -1) {
+-		DBG1("Can not specify both slot_description and slot_num in file %s",configuration.config_file);
+-	            return;
+-	    }
+-
+-	    if (configuration.slot_description == NULL && configuration.slot_num == -1) {
+-		DBG1("Neither slot_description nor slot_num found in file %s",configuration.config_file);
++	    if (configuration.slot_description != NULL && configuration.slot_num != 0) {
++		DBG1("Can not specify both slot_description and slot_num != 0 in file %s",configuration.config_file);
+ 	            return;
+ 	    }
+ 
diff --git a/pam_pkcs11.changes b/pam_pkcs11.changes
index 8620171..7f38153 100644
--- a/pam_pkcs11.changes
+++ b/pam_pkcs11.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue May  7 15:19:11 UTC 2024 - Davide Benini <davide.benini@suse.com>
+
+- Fix for bsc#1221255:
+  * Add patch 0001-Set-slot_num-configuration-parameter-to-0-by-default.patch
+
 -------------------------------------------------------------------
 Thu Feb 29 14:54:54 UTC 2024 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/pam_pkcs11.spec b/pam_pkcs11.spec
index fd92ec6..4e36911 100644
--- a/pam_pkcs11.spec
+++ b/pam_pkcs11.spec
@@ -34,6 +34,7 @@ Source4:        pkcs11_eventmgr.service
 Patch0:         %{name}-fsf-address.patch
 Patch1:         %{name}-0.5.3-nss-conf.patch
 Patch3:         %{name}-0.6.0-nss-autoconf.patch
+Patch4:         0001-Set-slot_num-configuration-parameter-to-0-by-default.patch
 BuildRequires:  curl-devel
 BuildRequires:  docbook-xsl-stylesheets
 BuildRequires:  doxygen