diff --git a/rts/Linker.c b/rts/Linker.c
index 51db363eb336939a7444298fa06684552c36558f..8e5ffa1353d5bd5a47d79165911ffc9a06c5cc53 100644
--- a/rts/Linker.c
+++ b/rts/Linker.c
@@ -78,7 +78,8 @@
     (   defined(linux_HOST_OS)     || defined(freebsd_HOST_OS) || \
         defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
         defined(openbsd_HOST_OS  ) || defined(darwin_HOST_OS ) || \
-        defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
+        defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS  ) || \
+        defined(solaris2_HOST_OS)))
 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
  * reallocating but we need to allocate jump islands just after each
  * object images. Otherwise relative branches to jump islands can fail