diff --git a/cmake/modules/IrisSCTP.cmake b/cmake/modules/IrisSCTP.cmake
index 42226968..b2a590b4 100644
--- a/cmake/modules/IrisSCTP.cmake
+++ b/cmake/modules/IrisSCTP.cmake
@@ -37,8 +37,8 @@ else()
         -DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH} -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
         -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} -DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
         -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER})
-    if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-        list(APPEND USRSCTP_BUILD_OPTIONS -DCMAKE_C_FLAGS="-Wno-maybe-uninitialized")
+    if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+        list(APPEND USRSCTP_BUILD_OPTIONS "-DCMAKE_C_FLAGS=-Wno-maybe-uninitialized -Wno-unused-but-set-variable")
     endif()
     if (EXISTS ${USRSCTP_SOURCE_DIR})
         message(STATUS "USRSCTP: found bundled sources")