diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 6a828e8418..83fdae7034 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -253,8 +253,12 @@ static int mmap_frag(abi_ulong real_start,
 # define TASK_UNMAPPED_BASE  (1ul << 38)
 #endif
 #else
+#ifdef TARGET_HPPA
+# define TASK_UNMAPPED_BASE  0xfa000000
+#else
 # define TASK_UNMAPPED_BASE  0x40000000
 #endif
+#endif
 abi_ulong mmap_next_start = TASK_UNMAPPED_BASE;
 
 unsigned long last_brk;