diff --git a/include/wintrust.h b/include/wintrust.h
index 0f52346..a422f9d 100644
--- a/include/wintrust.h
+++ b/include/wintrust.h
@@ -238,7 +238,7 @@
  struct _CRYPT_PROVIDER_DATA *pProvData);
 typedef HRESULT (*PFN_PROVIDER_SIGTRUST_CALL)(
  struct _CRYPT_PROVIDER_DATA *pProvData);
-typedef HRESULT (*PFN_PROVIDER_CERTTTRUST_CALL)(
+typedef HRESULT (*PFN_PROVIDER_CERTTRUST_CALL)(
  struct _CRYPT_PROVIDER_DATA *pProvData);
 typedef HRESULT (*PFN_PROVIDER_FINALPOLICY_CALL)(
  struct _CRYPT_PROVIDER_DATA *pProvData);
@@ -261,7 +261,7 @@
     PFN_PROVIDER_INIT_CALL            pfnInitialize;
     PFN_PROVIDER_OBJTRUST_CALL        pfnObjectTrust;
     PFN_PROVIDER_SIGTRUST_CALL        pfnSignatureTrust;
-    PFN_PROVIDER_CERTTTRUST_CALL      pfnCertificateTrust;
+    PFN_PROVIDER_CERTTRUST_CALL       pfnCertificateTrust;
     PFN_PROVIDER_FINALPOLICY_CALL     pfnFinalPolicy;
     PFN_PROVIDER_CERTCHKPOLICY_CALL   pfnCertCheckPolicy;
     PFN_PROVIDER_TESTFINALPOLICY_CALL pfnTestFinalPolicy;