diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8535ad5f3..c7bc54994 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -551,6 +551,7 @@ if(NOT OPUS_DISABLE_INTRINSICS)
         target_compile_definitions(opus PRIVATE OPUS_HAVE_RTCD)
         add_sources_group(opus celt ${celt_sources_arm_rtcd})
         add_sources_group(opus silk ${silk_sources_arm_rtcd})
+        add_sources_group(opus lpcnet ${dnn_sources_arm_rtcd})
       else()
         message(ERROR "Runtime cpu capability detection needed for MAY_HAVE_NEON")
       endif()
diff --git a/cmake/OpusSources.cmake b/cmake/OpusSources.cmake
index 0cf245578..070f6f0e4 100644
--- a/cmake/OpusSources.cmake
+++ b/cmake/OpusSources.cmake
@@ -52,6 +52,7 @@ get_opus_sources(DNN_SOURCES_SSE4_1 lpcnet_sources.mk dnn_sources_sse4_1)
 get_opus_sources(DNN_SOURCES_AVX2 lpcnet_sources.mk dnn_sources_avx2)
 get_opus_sources(DNN_SOURCES_NEON lpcnet_sources.mk dnn_sources_arm_neon)
 get_opus_sources(DNN_SOURCES_DOTPROD lpcnet_sources.mk dnn_sources_arm_dotprod)
+get_opus_sources(DNN_SOURCES_ARM_RTCD lpcnet_sources.mk dnn_sources_arm_rtcd)
 
 get_opus_sources(opus_demo_SOURCES Makefile.am opus_demo_sources)
 get_opus_sources(opus_custom_demo_SOURCES Makefile.am opus_custom_demo_sources)