diff --git a/DeployMacros.cmake b/DeployMacros.cmake
index 4972476..bfae6d7 100644
--- a/DeployMacros.cmake
+++ b/DeployMacros.cmake
@@ -377,7 +377,7 @@ macro(get_system _OS _ARCH)
 			endforeach()
 		endif()
 		find_file(_release_file NAMES os-release lsb-release PATHS ${_paths} NO_DEFAULT_PATH)
-		if ("${_release_file}")
+		if (_release_file)
 			file(STRINGS "${_release_file}" _lines)
 			foreach(_l ${_lines})
 				if ("${_l}" MATCHES "VERSION_ID=.*")