diff --git a/cnn_calc.c b/cnn_calc.c
index bea0d9c..87a2a17 100644
--- a/cnn_calc.c
+++ b/cnn_calc.c
@@ -3,7 +3,7 @@
 #include <immintrin.h>
 #endif
 
-inline int get_hiddenNext_5x5(game_hdl_t *hdl,  cnn_t hiddenNext[21][21][FILTER_SIZE], cnn_t hiddenPrev[23][23][CHANNEL_SIZE], 
+static inline int get_hiddenNext_5x5(game_hdl_t *hdl,  cnn_t hiddenNext[21][21][FILTER_SIZE], cnn_t hiddenPrev[23][23][CHANNEL_SIZE], 
 	const int x, const int y, const int inputNums, const int outputNums)
 {
 	int input, output;
@@ -166,7 +166,7 @@
 }
 
 
-inline int get_hiddenNext_3x3(game_hdl_t *hdl,  cnn_t hiddenNext[21][21][FILTER_SIZE], cnn_t hiddenPrev[21][21][FILTER_SIZE], 
+static inline int get_hiddenNext_3x3(game_hdl_t *hdl,  cnn_t hiddenNext[21][21][FILTER_SIZE], cnn_t hiddenPrev[21][21][FILTER_SIZE], 
 	const int x, const int y, const int inputNums, const int outputNums, const int layer)
 {
 	int input, output;