diff --git a/winpr/libwinpr/smartcard/smartcard_pcsc.c b/winpr/libwinpr/smartcard/smartcard_pcsc.c
index 797231076..0745f40e4 100644
--- a/winpr/libwinpr/smartcard/smartcard_pcsc.c
+++ b/winpr/libwinpr/smartcard/smartcard_pcsc.c
@@ -2777,6 +2777,9 @@ static LONG WINAPI PCSC_SCardReadCacheA(SCARDCONTEXT hContext, UUID* CardIdentif
 {
 	PCSC_CACHE_ITEM* data = NULL;
 	PCSC_SCARDCONTEXT* ctx = PCSC_GetCardContextData(hContext);
+	if (!ctx)
+		return SCARD_E_INVALID_HANDLE;
+
 	char* id = card_id_and_name_a(CardIdentifier, LookupName);
 
 	data = HashTable_GetItemValue(ctx->cache, id);