diff --git a/CMakeLists.txt b/CMakeLists.txt
index b2fb036fa..a3b49fd66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -83,7 +83,7 @@ IF(MSVC AND NOT DEFINED DFHACK_BUILD_ARCH)
         SET(DFHACK_BUILD_ARCH "32")
     ENDIF()
 ELSE()
-    SET(DFHACK_BUILD_ARCH "32" CACHE STRING "Architecture to build ('32' or '64')")
+    SET(DFHACK_BUILD_ARCH "64" CACHE STRING "Architecture to build ('32' or '64')")
 ENDIF()
 
 IF("${DFHACK_BUILD_ARCH}" STREQUAL "32")
diff --git a/docs/changelog.txt b/docs/changelog.txt
index 390bb7f35..a137d4314 100644
--- a/docs/changelog.txt
+++ b/docs/changelog.txt
@@ -62,6 +62,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
     - ``stress_cutoffs`` (Lua: ``getStressCutoffs()``)
 
 ## Internals
+- Changed default build architecture to 64-bit
 - Added documentation for all RPC functions and a build-time check
 - Added support for build IDs to development builds
 - Use ``dlsym(3)`` to find vtables from libgraphics.so