diff --git a/compiler-rt/lib/scudo/standalone/mem_map.h b/compiler-rt/lib/scudo/standalone/mem_map.h
--- a/compiler-rt/lib/scudo/standalone/mem_map.h
+++ b/compiler-rt/lib/scudo/standalone/mem_map.h
@@ -76,7 +76,7 @@
 using ReservedMemoryT = ReservedMemoryDefault;
 using MemMapT = ReservedMemoryT::MemMapT;
 #elif SCUDO_FUCHSIA
-using ReservedMemoryT = ReservedMemoryDefault;
+using ReservedMemoryT = ReservedMemoryFuchsia;
 using MemMapT = ReservedMemoryT::MemMapT;
 #elif SCUDO_TRUSTY
 using ReservedMemoryT = ReservedMemoryDefault;