diff --git a/evolution-data-server-cmake-c99.patch b/evolution-data-server-cmake-c99.patch
new file mode 100644
index 0000000..0df24ca
--- /dev/null
+++ b/evolution-data-server-cmake-c99.patch
@@ -0,0 +1,19 @@
+commit 55558d3c23e68aada59c5deb59a664aea263f075
+Author: Milan Crha <mcrha@redhat.com>
+Date:   Fri Dec 1 09:52:57 2023 +0100
+
+    build: Correct incompatible type warning from check for I_CAL_EMAIL_PARAMETER
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index e7d376add97ef493..6173c0fc39d7688f 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -963,7 +963,7 @@ set(CMAKE_REQUIRED_LIBRARIES ${CALENDAR_LDFLAGS})
+ CHECK_C_SOURCE_COMPILES("#define LIBICAL_GLIB_UNSTABLE_API 1
+ 			#include <libical-glib/libical-glib.h>
+ 			int main(void) {
+-				icalparameter *param;
++				ICalParameter *param;
+ 				param = i_cal_property_get_first_parameter (NULL, I_CAL_EMAIL_PARAMETER);
+ 				i_cal_parameter_get_email (param);
+ 				i_cal_parameter_new_email (NULL);
diff --git a/evolution-data-server.spec b/evolution-data-server.spec
index 319df69..69d3a40 100644
--- a/evolution-data-server.spec
+++ b/evolution-data-server.spec
@@ -60,11 +60,12 @@
 
 Name: evolution-data-server
 Version: 3.50.2
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Backend data server for Evolution
 License: LGPL-2.0-or-later
 URL: https://wiki.gnome.org/Apps/Evolution
 Source: http://download.gnome.org/sources/%{name}/3.50/%{name}-%{version}.tar.xz
+Patch0: evolution-data-server-cmake-c99.patch
 
 Provides: evolution-webcal = %{version}
 Obsoletes: evolution-webcal < 2.24.0
@@ -503,6 +504,9 @@ find $RPM_BUILD_ROOT -name '*.so.*' -exec chmod +x {} \;
 %{_datadir}/installed-tests
 
 %changelog
+* Tue Dec 19 2023 Florian Weimer <fweimer@redhat.com> - 3.50.2-2
+- Backport upstream patch to fix C issue in CMake probing
+
 * Fri Dec 01 2023 Milan Crha <mcrha@redhat.com> - 3.50.2-1
 - Update to 3.50.2