Index: kernel/generic/src/log/log.c
===================================================================
--- kernel/generic/src/log/log.c	(revision aafed151536405cdb1390b88b7e4ac7c285dd53e)
+++ kernel/generic/src/log/log.c	(revision e0545de2baba1ee53c20d2582fa17b27b689de4a)
@@ -295,6 +295,6 @@
  *
  */
-sys_errno_t sys_klog(sysarg_t operation, void *buf, size_t size,
-    sysarg_t level, size_t *uspace_nread)
+sys_errno_t sys_klog(sysarg_t operation, uspace_addr_t buf, size_t size,
+    sysarg_t level, uspace_ptr_size_t uspace_nread)
 {
 	char *data;