diff --git a/include/zephyr/sys/ring_buffer.h b/include/zephyr/sys/ring_buffer.h
index 2c75cf1eb84d..76c971076100 100644
--- a/include/zephyr/sys/ring_buffer.h
+++ b/include/zephyr/sys/ring_buffer.h
@@ -304,8 +304,9 @@ static inline uint32_t ring_buf_put_claim(struct ring_buf *buf,
 					  uint8_t **data,
 					  uint32_t size)
 {
+	uint32_t space = ring_buf_space_get(buf);
 	return ring_buf_area_claim(buf, &buf->put, data,
-				   MIN(size, ring_buf_space_get(buf)));
+				   MIN(size, space));
 }
 
 /**
@@ -385,8 +386,9 @@ static inline uint32_t ring_buf_get_claim(struct ring_buf *buf,
 					  uint8_t **data,
 					  uint32_t size)
 {
+	uint32_t buf_size = ring_buf_size_get(buf);
 	return ring_buf_area_claim(buf, &buf->get, data,
-				   MIN(size, ring_buf_size_get(buf)));
+				   MIN(size, buf_size));
 }
 
 /**