diff --git a/CMakeLists.txt b/CMakeLists.txt
index ffc7978..1ec2ac6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -197,6 +197,7 @@ elseif (MSVC)
 	add_definitions(/wd4127) # conditional expression is constant
 	add_definitions(/wd4244) # possible loss of data
 	add_definitions(/wd4245) # signed/unsigned mismatch
+	add_definitions(/wd4267) # possible loss of data
 	add_definitions(/wd4714) # 'function' marked as __forceinline not inlined
 	add_definitions(/wd4996) # 'function': was declared deprecated
 	set(CMAKE_C_FLAGS_DEBUG "-D_DEBUG /Od /Zi /MDd")