diff --git a/src/network/ssl/qtlskey_schannel.cpp b/src/network/ssl/qtlskey_schannel.cpp
index d739cbd117e..24ea10ba705 100644
--- a/src/network/ssl/qtlskey_schannel.cpp
+++ b/src/network/ssl/qtlskey_schannel.cpp
@@ -37,6 +37,7 @@
 **
 ****************************************************************************/
 
+#include "qssl_p.h"
 #include "qtlskey_schannel_p.h"
 #include "qsslkey_p.h"
 #include "qsslkey.h"