diff --git a/matter/mbedtls/tinycrypt/src/pk.c b/matter/mbedtls/tinycrypt/src/pk.c
index f498935ee8..6bfc165a65 100644
--- a/matter/mbedtls/tinycrypt/src/pk.c
+++ b/matter/mbedtls/tinycrypt/src/pk.c
@@ -95,8 +95,9 @@ void mbedtls_pk_free(mbedtls_pk_context *ctx) {
   if (ctx == NULL)
     return;
 
-  if (ctx->pk_info != NULL)
+  if ((ctx->pk_info != NULL) && (ctx->pk_info->ctx_free_func != NULL)) {
     ctx->pk_info->ctx_free_func(ctx->pk_ctx);
+  }
 
   mbedtls_platform_zeroize(ctx, sizeof(mbedtls_pk_context));
 }