diff --git a/programs/ssl/query_config.c b/programs/ssl/query_config.c
index afbb09cc2..144e56060 100644
--- a/programs/ssl/query_config.c
+++ b/programs/ssl/query_config.c
@@ -234,6 +234,14 @@ int query_config( const char *config )
     }
 #endif /* MBEDTLS_PLATFORM_SNPRINTF_ALT */
 
+#if defined(MBEDTLS_PLATFORM_VSNPRINTF_ALT)
+    if( strcmp( "MBEDTLS_PLATFORM_VSNPRINTF_ALT", config ) == 0 )
+    {
+        MACRO_EXPANSION_TO_STR( MBEDTLS_PLATFORM_VSNPRINTF_ALT );
+        return( 0 );
+    }
+#endif /* MBEDTLS_PLATFORM_VSNPRINTF_ALT */
+
 #if defined(MBEDTLS_PLATFORM_NV_SEED_ALT)
     if( strcmp( "MBEDTLS_PLATFORM_NV_SEED_ALT", config ) == 0 )
     {
@@ -2362,6 +2370,14 @@ int query_config( const char *config )
     }
 #endif /* MBEDTLS_PLATFORM_SNPRINTF_MACRO */
 
+#if defined(MBEDTLS_PLATFORM_VSNPRINTF_MACRO)
+    if( strcmp( "MBEDTLS_PLATFORM_VSNPRINTF_MACRO", config ) == 0 )
+    {
+        MACRO_EXPANSION_TO_STR( MBEDTLS_PLATFORM_VSNPRINTF_MACRO );
+        return( 0 );
+    }
+#endif /* MBEDTLS_PLATFORM_VSNPRINTF_MACRO */
+
 #if defined(MBEDTLS_PLATFORM_NV_SEED_READ_MACRO)
     if( strcmp( "MBEDTLS_PLATFORM_NV_SEED_READ_MACRO", config ) == 0 )
     {