diff --git a/library/ripemd160.c b/library/ripemd160.c
index d2ccbbe..1553558 100644
--- a/library/ripemd160.c
+++ b/library/ripemd160.c
@@ -100,7 +100,7 @@
     ctx->state[3] = 0x10325476;
     ctx->state[4] = 0xC3D2E1F0;
 
-    return( 0 );
+    return 0 ;
 }
 
 #if !defined(MBEDTLS_RIPEMD160_PROCESS_ALT)
@@ -297,7 +297,7 @@
     /* Zeroise variables to clear sensitive data from memory. */
     mbedtls_platform_zeroize( &local, sizeof( local ) );
 
-    return( 0 );
+    return 0 ;
 }
 
 #endif /* !MBEDTLS_RIPEMD160_PROCESS_ALT */
@@ -314,7 +314,7 @@
     uint32_t left;
 
     if( ilen == 0 )
-        return( 0 );
+        return 0 ;
 
     left = ctx->total[0] & 0x3F;
     fill = 64 - left;
@@ -330,7 +330,7 @@
         memcpy( (void *) (ctx->buffer + left), input, fill );
 
         if( ( ret = mbedtls_internal_ripemd160_process( ctx, ctx->buffer ) ) != 0 )
-            return( ret );
+            return ret ;
 
         input += fill;
         ilen  -= fill;
@@ -340,7 +340,7 @@
     while( ilen >= 64 )
     {
         if( ( ret = mbedtls_internal_ripemd160_process( ctx, input ) ) != 0 )
-            return( ret );
+            return ret ;
 
         input += 64;
         ilen  -= 64;
@@ -351,7 +351,7 @@
         memcpy( (void *) (ctx->buffer + left), input, ilen );
     }
 
-    return( 0 );
+    return 0 ;
 }
 
 static const unsigned char ripemd160_padding[64] =
@@ -385,11 +385,11 @@
 
     ret = mbedtls_ripemd160_update( ctx, ripemd160_padding, padn );
     if( ret != 0 )
-        return( ret );
+        return ret ;
 
     ret = mbedtls_ripemd160_update( ctx, msglen, 8 );
     if( ret != 0 )
-        return( ret );
+        return ret ;
 
     PUT_UINT32_LE( ctx->state[0], output,  0 );
     PUT_UINT32_LE( ctx->state[1], output,  4 );
@@ -397,7 +397,7 @@
     PUT_UINT32_LE( ctx->state[3], output, 12 );
     PUT_UINT32_LE( ctx->state[4], output, 16 );
 
-    return( 0 );
+    return 0 ;
 }
 
 #endif /* ! MBEDTLS_RIPEMD160_ALT */
@@ -426,7 +426,7 @@
 exit:
     mbedtls_ripemd160_free( &ctx );
 
-    return( ret );
+    return ret ;
 }
 
 #if defined(MBEDTLS_SELF_TEST)
@@ -480,7 +480,7 @@
     int i, ret = 0;
     unsigned char output[20];
 
-    memset( output, 0, sizeof output );
+    memset( output, 0, sizeof(output) );
 
     for( i = 0; i < TESTS; i++ )
     {
@@ -505,13 +505,13 @@
     if( verbose != 0 )
         mbedtls_printf( "\n" );
 
-    return( 0 );
+    return 0 ;
 
 fail:
     if( verbose != 0 )
         mbedtls_printf( "failed\n" );
 
-    return( ret );
+    return ret ;
 }
 
 #endif /* MBEDTLS_SELF_TEST */