diff --git a/features/mbedtls/targets/TARGET_STM/sha1_alt.c b/features/mbedtls/targets/TARGET_STM/sha1_alt.c
index a5b61c135f..8cc38a8054 100644
--- a/features/mbedtls/targets/TARGET_STM/sha1_alt.c
+++ b/features/mbedtls/targets/TARGET_STM/sha1_alt.c
@@ -18,8 +18,8 @@
  *
  */
 #include "mbedtls/sha1.h"
-
 #if defined(MBEDTLS_SHA1_ALT)
+#include "mbedtls/platform.h"
 
 /* Implementation that should never be optimized out by the compiler */
 static void mbedtls_zeroize( void *v, size_t n ) {
@@ -40,7 +40,7 @@ void mbedtls_sha1_free( mbedtls_sha1_context *ctx )
 {
     if( ctx == NULL )
         return;
-	
+
 	/* Force the HASH Periheral Clock Reset */
     __HAL_RCC_HASH_FORCE_RESET();
 
@@ -66,7 +66,7 @@ void mbedtls_sha1_starts( mbedtls_sha1_context *ctx )
         // error found to be returned
         return;
     }
-    
+
     /* HASH Configuration */
     ctx->hhash_sha1.Init.DataType = HASH_DATATYPE_8B;
     if (HAL_HASH_Init(&ctx->hhash_sha1) == HAL_ERROR) {
@@ -126,7 +126,7 @@ void mbedtls_sha1_update( mbedtls_sha1_context *ctx, const unsigned char *input,
                 ctx->flag=0;
             }
         }
-    }    
+    }
 }
 
 /*
@@ -140,7 +140,7 @@ void mbedtls_sha1_finish( mbedtls_sha1_context *ctx, unsigned char output[20] )
     }
 
     __HAL_HASH_START_DIGEST();
-        
+
     if (HAL_HASH_SHA1_Finish(&ctx->hhash_sha1, output, 10)){
         // error code to be returned
     }
diff --git a/features/mbedtls/targets/TARGET_STM/sha1_alt.h b/features/mbedtls/targets/TARGET_STM/sha1_alt.h
index 4f04002ebe..37fa83b770 100644
--- a/features/mbedtls/targets/TARGET_STM/sha1_alt.h
+++ b/features/mbedtls/targets/TARGET_STM/sha1_alt.h
@@ -22,8 +22,6 @@
 
 #if defined MBEDTLS_SHA1_ALT
 
-#include "mbedtls/platform.h"
-#include "mbedtls/config.h"
 
 #include "cmsis.h"
 #include <string.h>
@@ -107,22 +105,6 @@ void mbedtls_sha1_process( mbedtls_sha1_context *ctx, const unsigned char data[6
 extern "C" {
 #endif
 
-/**
- * \brief          Output = SHA-1( input buffer )
- *
- * \param input    buffer holding the  data
- * \param ilen     length of the input data
- * \param output   SHA-1 checksum result
- */
-void mbedtls_sha1( const unsigned char *input, size_t ilen, unsigned char output[20] );
-
-/**
- * \brief          Checkup routine
- *
- * \return         0 if successful, or 1 if the test failed
- */
-int mbedtls_sha1_self_test( int verbose );
-
 #ifdef __cplusplus
 }
 #endif