diff --git a/tensorflow/lite/tools/make/Makefile b/tensorflow/lite/tools/make/Makefile
index d8565c2790e..dcf2c94f866 100644
--- a/tensorflow/lite/tools/make/Makefile
+++ b/tensorflow/lite/tools/make/Makefile
@@ -164,6 +164,7 @@ ifeq ($(BUILD_WITH_NNAPI),true)
 	CORE_CC_ALL_SRCS += tensorflow/lite/delegates/nnapi/nnapi_delegate.cc
 	CORE_CC_ALL_SRCS += tensorflow/lite/nnapi/nnapi_implementation.cc
 	CORE_CC_ALL_SRCS += tensorflow/lite/nnapi/quant_lstm_sup.cc
+	LIBS += -lrt
 else
 	CORE_CC_ALL_SRCS += tensorflow/lite/delegates/nnapi/nnapi_delegate_disabled.cc
 	CORE_CC_ALL_SRCS += tensorflow/lite/nnapi/nnapi_implementation_disabled.cc