diff --git a/indra/CMakeLists.txt b/indra/CMakeLists.txt
index d53e80b0ced1e4298ce02b3e2c4110bf1d94acc9..6638fcd1bd795d8b4b1b64a0030f9f213674f3ba 100644
--- a/indra/CMakeLists.txt
+++ b/indra/CMakeLists.txt
@@ -13,6 +13,7 @@ project(${ROOT_PROJECT_NAME})
 
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
 
+set(CMAKE_C_STANDARD 17)
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)