diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index 30daf6d76..6d86f260b 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -811,7 +811,7 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
         *p++ = (unsigned char)( ciphersuites[i]      );
     }
 
-	MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, got %d ciphersuites (excluding SCSVs)", n ) );
+    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello, got %d ciphersuites (excluding SCSVs)", n ) );
 
     /*
      * Add TLS_EMPTY_RENEGOTIATION_INFO_SCSV
@@ -820,7 +820,7 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
     if( ssl->renego_status == MBEDTLS_SSL_INITIAL_HANDSHAKE )
 #endif
     {
-		MBEDTLS_SSL_DEBUG_MSG( 3, ( "adding EMPTY_RENEGOTIATION_INFO_SCSV" ) );
+        MBEDTLS_SSL_DEBUG_MSG( 3, ( "adding EMPTY_RENEGOTIATION_INFO_SCSV" ) );
         *p++ = (unsigned char)( MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO >> 8 );
         *p++ = (unsigned char)( MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO      );
         n++;