diff --git a/silk_sources.mk b/silk_sources.mk
index 0de367b..7cfb7d3 100644
--- a/silk_sources.mk
+++ b/silk_sources.mk
@@ -76,6 +76,11 @@
 silk/stereo_find_predictor.c \
 silk/stereo_quant_pred.c
 
+SILK_SOURCES_SSE4_1 = silk/x86/NSQ_sse.c \
+silk/x86/NSQ_del_dec_sse.c \
+silk/x86/x86_silk_map.c \
+silk/x86/VAD_sse.c \
+silk/x86/VQ_WMat_EC_sse.c
 
 SILK_SOURCES_FIXED = \
 silk/fixed/LTP_analysis_filter_FIX.c \
@@ -104,6 +109,10 @@
 silk/fixed/schur64_FIX.c \
 silk/fixed/schur_FIX.c
 
+SILK_SOURCES_FIXED_SSE4_1 = silk/fixed/x86/vector_ops_FIX_sse.c \
+silk/fixed/x86/burg_modified_FIX_sse.c \
+silk/fixed/x86/prefilter_FIX_sse.c
+
 SILK_SOURCES_FLOAT = \
 silk/float/apply_sine_window_FLP.c \
 silk/float/corrMatrix_FLP.c \