diff --git a/src/system/libroot/posix/sys/mman.cpp b/src/system/libroot/posix/sys/mman.cpp
index 68dbf0a7a2..af23c37e69 100644
--- a/src/system/libroot/posix/sys/mman.cpp
+++ b/src/system/libroot/posix/sys/mman.cpp
@@ -117,7 +117,7 @@ mmap(void* address, size_t length, int protection, int flags, int fd,
 	if ((flags & MAP_FIXED) != 0)
 		addressSpec = B_EXACT_ADDRESS;
 	else if (address != NULL)
-		addressSpec = B_RANDOMIZED_BASE_ADDRESS;
+		addressSpec = B_BASE_ADDRESS;
 	else
 		addressSpec = B_RANDOMIZED_ANY_ADDRESS;