diff --git a/kernel-src/fs/pipefs.c b/kernel-src/fs/pipefs.c
index e1974833..4139f8db 100644
--- a/kernel-src/fs/pipefs.c
+++ b/kernel-src/fs/pipefs.c
@@ -223,7 +223,7 @@ int pipefs_write(vnode_t *node, void *buffer, size_t size, uintmax_t offset, int
 		if (revents & POLLHUP)
 			break;
 
-		size_t freebytes = RINGBUFFER_SIZE(&pipenode->data) - RINGBUFFER_DATACOUNT(&pipenode->data);
+		size_t freebytes = RINGBUFFER_FREESPACE(&pipenode->data);
 		// case 1
 		if (nonblock == false && atomic && freebytes >= size)
 			break;
diff --git a/kernel-src/include/ringbuffer.h b/kernel-src/include/ringbuffer.h
index 53847fd4..f53a3f63 100644
--- a/kernel-src/include/ringbuffer.h
+++ b/kernel-src/include/ringbuffer.h
@@ -20,5 +20,6 @@ size_t ringbuffer_peek(ringbuffer_t *ringbuffer, void *buffer, uintmax_t offset,
 
 #define RINGBUFFER_DATACOUNT(x) ((x)->write - (x)->read)
 #define RINGBUFFER_SIZE(x) (x)->size
+#define RINGBUFFER_FREESPACE(x) (RINGBUFFER_SIZE(x) - RINGBUFFER_DATACOUNT(x))
 
 #endif