diff --git a/0001-main.c-fix-build-against-gcc-14-Walloc-size.patch b/0001-main.c-fix-build-against-gcc-14-Walloc-size.patch
new file mode 100644
index 0000000..f0c103e
--- /dev/null
+++ b/0001-main.c-fix-build-against-gcc-14-Walloc-size.patch
@@ -0,0 +1,47 @@
+From 2b4446f550160b3e04ab65d5419c0a1f8a39558c Mon Sep 17 00:00:00 2001
+From: Sergei Trofimovich <slyich@gmail.com>
+Date: Thu, 2 Nov 2023 20:04:24 +0000
+Subject: [PATCH] main.c: fix build against gcc-14 (-Walloc-size)
+
+`gcc-14` added a new `-Walloc-size` warning that makes sure that size of
+an individual element matches size of a pointed type:
+
+        https://gcc.gnu.org/PR71219
+
+`swaybg` triggers it on `calloc()` calls where member size is used as
+`1` (instead of member count):
+
+    ../main.c:492:32: error: allocation of insufficient size '1' for type 'struct swaybg_output_config' with size '48' [-Werror=alloc-size]
+      492 |                         config = calloc(sizeof(struct swaybg_output_config), 1);
+          |                                ^
+
+Signed-off-by: rpm-build <rpm-build>
+---
+ main.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/main.c b/main.c
+index dce5b5a..211a874 100644
+--- a/main.c
++++ b/main.c
+@@ -455,7 +455,7 @@ static void parse_command_line(int argc, char **argv,
+ 		"Background Modes:\n"
+ 		"  stretch, fit, fill, center, tile, or solid_color\n";
+ 
+-	struct swaybg_output_config *config = calloc(sizeof(struct swaybg_output_config), 1);
++	struct swaybg_output_config *config = calloc(1, sizeof(struct swaybg_output_config));
+ 	config->output = strdup("*");
+ 	config->mode = BACKGROUND_MODE_INVALID;
+ 	wl_list_init(&config->link); // init for safe removal
+@@ -489,7 +489,7 @@ static void parse_command_line(int argc, char **argv,
+ 				// Empty config or merged on top of an existing one
+ 				destroy_swaybg_output_config(config);
+ 			}
+-			config = calloc(sizeof(struct swaybg_output_config), 1);
++			config = calloc(1, sizeof(struct swaybg_output_config));
+ 			config->output = strdup(optarg);
+ 			config->mode = BACKGROUND_MODE_INVALID;
+ 			wl_list_init(&config->link);  // init for safe removal
+-- 
+2.43.0
+
diff --git a/swaybg.spec b/swaybg.spec
index 5ca7aff..7948fb1 100644
--- a/swaybg.spec
+++ b/swaybg.spec
@@ -9,6 +9,8 @@ Source0:    %{url}/releases/download/v%{version}/%{name}-%{version}.tar.gz
 Source1:    %{url}/releases/download/v%{version}/%{name}-%{version}.tar.gz.sig
 Source2:    https://keys.openpgp.org/vks/v1/by-fingerprint/34FF9526CFEF0E97A340E2E40FDE7BE0E88F5E48
 
+Patch:      0001-main.c-fix-build-against-gcc-14-Walloc-size.patch
+
 # Swaybg was part of sway before sway 1.1
 Conflicts:  sway < 1.1