Index: uspace/lib/c/generic/as.c
===================================================================
--- uspace/lib/c/generic/as.c	(revision 09696b54e45f82c8af19ae8631ec4086bc08f08d)
+++ uspace/lib/c/generic/as.c	(revision 56273bba63681b1fbd77cac08c9ee56c7e06507f)
@@ -51,5 +51,5 @@
  *
  */
-void *as_area_create(void *address, size_t size, int flags)
+void *as_area_create(void *address, size_t size, unsigned int flags)
 {
 	return (void *) __SYSCALL3(SYS_AS_AREA_CREATE, (sysarg_t) address,
@@ -67,5 +67,5 @@
  *
  */
-int as_area_resize(void *address, size_t size, int flags)
+int as_area_resize(void *address, size_t size, unsigned int flags)
 {
 	return __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t) address,
@@ -95,5 +95,5 @@
  *
  */
-int as_area_change_flags(void *address, int flags)
+int as_area_change_flags(void *address, unsigned int flags)
 {
 	return __SYSCALL2(SYS_AS_AREA_CHANGE_FLAGS, (sysarg_t) address,
Index: uspace/lib/c/include/as.h
===================================================================
--- uspace/lib/c/include/as.h	(revision 09696b54e45f82c8af19ae8631ec4086bc08f08d)
+++ uspace/lib/c/include/as.h	(revision 56273bba63681b1fbd77cac08c9ee56c7e06507f)
@@ -54,10 +54,10 @@
 }
 
-extern void *as_area_create(void *address, size_t size, int flags);
-extern int as_area_resize(void *address, size_t size, int flags);
-extern int as_area_change_flags(void *address, int flags);
-extern int as_area_destroy(void *address);
-extern void *set_maxheapsize(size_t mhs);
-extern void * as_get_mappable_page(size_t sz);
+extern void *as_area_create(void *, size_t, unsigned int);
+extern int as_area_resize(void *, size_t, unsigned int);
+extern int as_area_change_flags(void *, unsigned int);
+extern int as_area_destroy(void *);
+extern void *set_maxheapsize(size_t);
+extern void * as_get_mappable_page(size_t);
 
 #endif