diff --git a/CMakeLists.txt b/CMakeLists.txt
index 14ebfa3de6..0bddb2fd87 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,7 +63,10 @@ if (UNIX)
 	# force 32bit build for now and set necessary flags to compile code as is
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32 -std=gnu99 -fno-omit-frame-pointer")
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32 -std=gnu++11 -fno-omit-frame-pointer")
-	set(CMAKE_SHARED_LINKER_FLAGS "-m32")
+	set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -m32")
+	if (APPLE)
+		set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-image_base,0x3401000")
+	endif (APPLE)
 	set(CMAKE_EXE_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS})
 endif (UNIX)
 
diff --git a/src/openrct2.c b/src/openrct2.c
index 0821ce5788..ae89b80586 100644
--- a/src/openrct2.c
+++ b/src/openrct2.c
@@ -566,7 +566,7 @@ static bool openrct2_setup_rct2_segment()
 		exit(1);
 	}
 
-	void *fbase = mmap(NULL, file_size, PROT_READ, MAP_PRIVATE, gExeFd, 0);
+	void *fbase = mmap(NULL, file_size, PROT_READ, MAP_PRIVATE | MAP_FILE, gExeFd, 0);
 	err = errno;
 	log_warning("mmapped file to %p", fbase);
 	if (fbase == MAP_FAILED)