diff --git a/recipes/boost/all/conanfile.py b/recipes/boost/all/conanfile.py
index 57e9f1776f251..9fd7e33c81a78 100644
--- a/recipes/boost/all/conanfile.py
+++ b/recipes/boost/all/conanfile.py
@@ -1429,7 +1429,7 @@ def package_info(self):
         if self.options.filesystem_no_deprecated:
             self.cpp_info.components["headers"].defines.append("BOOST_FILESYSTEM_NO_DEPRECATED")
 
-        if self.options.filesystem_version is not None:
+        if self.options.filesystem_version:
             self.cpp_info.components["headers"].defines.append(f"BOOST_FILESYSTEM_VERSION={self.options.filesystem_version}")
 
         if self.options.segmented_stacks: