diff --git a/src/openrct2/CMakeLists.txt b/src/openrct2/CMakeLists.txt
index 367939c962..55882a1097 100644
--- a/src/openrct2/CMakeLists.txt
+++ b/src/openrct2/CMakeLists.txt
@@ -265,3 +265,7 @@ else ()
     # Dummy target to ease invocation
     add_custom_target(${PROJECT_NAME}-headers-check)
 endif ()
+
+if (UNIX)
+    add_definitions(-D_FILE_OFFSET_BITS=64)
+endif ()
diff --git a/src/openrct2/core/FileStream.cpp b/src/openrct2/core/FileStream.cpp
index c151ac2917..8f911ef8fc 100644
--- a/src/openrct2/core/FileStream.cpp
+++ b/src/openrct2/core/FileStream.cpp
@@ -21,11 +21,6 @@
 #    include <io.h>
 #endif
 
-#if defined(__linux__) && !defined(__ANDROID__)
-#    define ftello ftello64
-#    define fseeko fseeko64
-#endif
-
 #ifdef _MSC_VER
 #    define ftello _ftelli64
 #    define fseeko _fseeki64