diff --git a/src/gemm.c b/src/gemm.c
index 112bed94..4948fbef 100644
--- a/src/gemm.c
+++ b/src/gemm.c
@@ -477,8 +477,6 @@ void transpose_bin(char *A, char *B, const int n, const int m,
 }
 */
 
-#else
-extern void transpose_32x32_bits_reversed_diagonale(uint32_t* A, uint32_t* B, int m, int n);
 #endif
 
 // transpose by 32-bit
diff --git a/src/gemm.h b/src/gemm.h
index e93ee0e4..de8a5e1a 100644
--- a/src/gemm.h
+++ b/src/gemm.h
@@ -59,7 +59,7 @@ void im2col_cpu_custom_transpose(float* data_im,
 
 void activate_array_cpu_custom(float *x, const int n, const ACTIVATION a);
 
-LIB_API void transpose_32x32_bits_reversed_diagonale(uint32_t *A, uint32_t *B, int m, int n);
+void transpose_32x32_bits_reversed_diagonale(uint32_t *A, uint32_t *B, int m, int n);
 
 void gemm_bin(int M, int N, int K, float ALPHA,
         char  *A, int lda,
diff --git a/src/gettimeofday.c b/src/gettimeofday.c
index b47d3cd7..1db060cb 100644
--- a/src/gettimeofday.c
+++ b/src/gettimeofday.c
@@ -1,7 +1,7 @@
 #ifdef _WIN32
 #include "gettimeofday.h"
 
-LIB_API int gettimeofday(struct timeval* tp, struct timezone* tzp)
+int gettimeofday(struct timeval* tp, struct timezone* tzp)
 {
   static const uint64_t EPOCH = ((uint64_t)116444736000000000ULL);
   SYSTEMTIME system_time;
@@ -19,7 +19,7 @@ LIB_API int gettimeofday(struct timeval* tp, struct timezone* tzp)
   return 0;
   }
 
-LIB_API int clock_gettime(int dummy, struct timespec* ct)
+int clock_gettime(int dummy, struct timespec* ct)
   {
   LARGE_INTEGER count;
 
diff --git a/src/gettimeofday.h b/src/gettimeofday.h
index f92c841d..4a9df673 100644
--- a/src/gettimeofday.h
+++ b/src/gettimeofday.h
@@ -28,8 +28,8 @@ extern "C" {
 static unsigned char g_first_time = 1;
 static LARGE_INTEGER g_counts_per_sec;
 
-LIB_API int gettimeofday(struct timeval*, struct timezone*);
-LIB_API int clock_gettime(int, struct timespec*);
+int gettimeofday(struct timeval*, struct timezone*);
+int clock_gettime(int, struct timespec*);
 
 #ifdef __cplusplus
 }
diff --git a/src/image.h b/src/image.h
index 20170932..be947d34 100644
--- a/src/image.h
+++ b/src/image.h
@@ -93,9 +93,9 @@ image load_image(char *filename, int w, int h, int c);
 image **load_alphabet();
 
 #ifdef OPENCV
-LIB_API image get_image_from_stream(CvCapture* cap);
-LIB_API image get_image_from_stream_cpp(CvCapture* cap);
-LIB_API image ipl_to_image(IplImage* src);
+image get_image_from_stream(CvCapture* cap);
+image get_image_from_stream_cpp(CvCapture* cap);
+image ipl_to_image(IplImage* src);
 #endif
 //float get_pixel(image m, int x, int y, int c);
 //float get_pixel_extend(image m, int x, int y, int c);
diff --git a/src/lstm_layer.h b/src/lstm_layer.h
index ae544148..f60a0cab 100644
--- a/src/lstm_layer.h
+++ b/src/lstm_layer.h
@@ -9,7 +9,7 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-LIB_API layer make_lstm_layer(int batch, int inputs, int outputs, int steps, int batch_normalize);
+layer make_lstm_layer(int batch, int inputs, int outputs, int steps, int batch_normalize);
 
 void forward_lstm_layer(layer l, network_state state);
 void update_lstm_layer(layer l, int batch, float learning_rate, float momentum, float decay);