diff --git a/src/isapi/IsapiRequest.C b/src/isapi/IsapiRequest.C
index d1076abcb8..2bca477bf8 100644
--- a/src/isapi/IsapiRequest.C
+++ b/src/isapi/IsapiRequest.C
@@ -56,7 +56,7 @@ IsapiRequest::IsapiRequest(LPEXTENSION_CONTROL_BLOCK ecb,
     // Try to configure async mode (synchronous_ must be set right, also
     // if only used for write)
     if (ecb->ServerSupportFunction(ecb->ConnID, HSE_REQ_IO_COMPLETION,
-        &IsapiRequest::completionCallback, 0, (LPDWORD)this)) {
+        (LPVOID)&IsapiRequest::completionCallback, 0, (LPDWORD)this)) {
       // Note: we don't expect this to happen
       synchronous_ = false;
     }
diff --git a/src/isapi/Server.C b/src/isapi/Server.C
index 048e8feec9..a98ddecd85 100644
--- a/src/isapi/Server.C
+++ b/src/isapi/Server.C
@@ -23,6 +23,7 @@
 #include "Wt/WLogger"
 
 #include <fstream>
+#include <cstring>
 
 using std::exit;
 using std::strcpy;