diff --git a/whois-remove-malloc-attribute.patch b/whois-remove-malloc-attribute.patch
new file mode 100644
index 0000000..31e9dd6
--- /dev/null
+++ b/whois-remove-malloc-attribute.patch
@@ -0,0 +1,13 @@
+Index: whois/utils.h
+===================================================================
+--- whois.orig/utils.h
++++ whois/utils.h
+@@ -24,7 +24,7 @@
+ # define NONNULL
+ # define UNUSED
+ #endif
+-#if defined __GNUC__ && !defined __clang__
++#if defined __GNUC__ && __GNUC__ >= 13 && !defined __clang__
+ # define MALLOC_FREE __attribute__((malloc(free)))
+ #else
+ # define MALLOC_FREE
diff --git a/whois-rpmlintrc b/whois-rpmlintrc
new file mode 100644
index 0000000..1a916b9
--- /dev/null
+++ b/whois-rpmlintrc
@@ -0,0 +1,3 @@
+# WHOIS is the name of the RFC
+addFilter("name-repeated-in-summary")
+
diff --git a/whois.changes b/whois.changes
index 7995250..144d86e 100644
--- a/whois.changes
+++ b/whois.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Nov 24 14:53:29 UTC 2023 - Danilo Spinella <oss@danyspin97.org>
+
+- Fix build on SLE
+  * whois-remove-malloc-attribute.patch
+
 -------------------------------------------------------------------
 Mon Nov 20 15:46:28 UTC 2023 - Danilo Spinella <oss@danyspin97.org>
 
diff --git a/whois.spec b/whois.spec
index bb9cdac..db47acd 100644
--- a/whois.spec
+++ b/whois.spec
@@ -26,7 +26,9 @@ URL:            https://github.com/rfc1036/whois
 Source:         https://ftp.debian.org/debian/pool/main/w/whois/%{name}_%{version}.tar.xz
 Source2:        https://ftp.debian.org/debian/pool/main/w/whois/%{name}_%{version}.dsc#/%{name}.asc
 Source3:        https://db.debian.org/fetchkey.cgi?fingerprint=6791403B68AE2690517C42EAE6FFF1E38DC968B0#/%{name}.keyring
+Source4:        %{name}-rpmlintrc
 Patch0:         whois-nobsdsource.patch
+Patch1:         whois-remove-malloc-attribute.patch
 BuildRequires:  pkgconfig
 BuildRequires:  xz
 BuildRequires:  pkgconfig(libidn2)