diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6c36c055..7e80f1a2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,9 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-add_compile_options(-Wall -Wshadow -Werror=switch)
+# NOTE: neeed largefile options to prevent problems with
+# smbclient on 32bit systems
+add_compile_options(-Wall -Wshadow -Werror=switch -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64)
 
 # You can get version from spec by first finding Versions keyword.
 # After that you can use awk to split line by : and then select second part of it.