diff --git a/lib/curl_setup.h b/lib/curl_setup.h
index ab0c139404..a21b96196c 100644
--- a/lib/curl_setup.h
+++ b/lib/curl_setup.h
@@ -249,7 +249,7 @@
 #  ifdef HAVE_WINSOCK2_H
 #    include <winsock2.h>
 #    ifdef HAVE_WS2TCPIP_H
-#       include <ws2tcpip.h>
+#      include <ws2tcpip.h>
 #    endif
 #  else
 #    ifdef HAVE_WINSOCK_H
diff --git a/lib/curl_sspi.h b/lib/curl_sspi.h
index 8655715e29..f990780b14 100644
--- a/lib/curl_sspi.h
+++ b/lib/curl_sspi.h
@@ -327,6 +327,10 @@ extern PSecurityFunctionTable s_pSecFn;
 # define SEC_I_SIGNATURE_NEEDED               ((HRESULT)0x0009035CL)
 #endif
 
+#ifndef CRYPT_E_REVOKED
+# define CRYPT_E_REVOKED                      ((HRESULT)0x80092010L)
+#endif
+
 #ifdef UNICODE
 #  define SECFLAG_WINNT_AUTH_IDENTITY \
      (unsigned long)SEC_WINNT_AUTH_IDENTITY_UNICODE
diff --git a/lib/strerror.c b/lib/strerror.c
index 5657141886..c8adb93d9c 100644
--- a/lib/strerror.c
+++ b/lib/strerror.c
@@ -39,6 +39,10 @@
 #include <idna.h>
 #endif
 
+#ifdef USE_WINDOWS_SSPI
+#include "curl_sspi.h"
+#endif
+
 #include "strerror.h"
 #include "curl_printf.h"
 #include "curl_memory.h"