diff --git a/source/blender/editors/object/object_bake_api.c b/source/blender/editors/object/object_bake_api.c
index 57b7bab2275..66236bf9ace 100644
--- a/source/blender/editors/object/object_bake_api.c
+++ b/source/blender/editors/object/object_bake_api.c
@@ -178,7 +178,7 @@ static bool write_internal_bake_pixels(
 	void *lock;
 	bool is_float;
 	char *mask_buffer = NULL;
-	const size_t num_pixels = width * height;
+	const size_t num_pixels = (size_t)width * (size_t)height;
 
 	ibuf = BKE_image_acquire_ibuf(image, NULL, &lock);