diff --git a/src/plugins/sqldrivers/ibase/qsql_ibase.cpp b/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
index 484dad6e1d..ead08dbce8 100644
--- a/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
+++ b/src/plugins/sqldrivers/ibase/qsql_ibase.cpp
@@ -1845,9 +1845,11 @@ bool QIBaseDriver::subscribeToNotification(const QString &name)
                    eBuffer->bufferLength,
                    eBuffer->eventBuffer,
 #if defined (FB_API_VER) && FB_API_VER >= 20
-                   reinterpret_cast<ISC_EVENT_CALLBACK>(qEventCallback),
+                   reinterpret_cast<ISC_EVENT_CALLBACK>(reinterpret_cast<void *>
+                                                                     (&qEventCallback)),
 #else
-                   reinterpret_cast<isc_callback>(qEventCallback),
+                   reinterpret_cast<isc_callback>(reinterpret_cast<void *>
+                                                        (&qEventCallback)),
 #endif
                    eBuffer->resultBuffer);
 
@@ -1925,9 +1927,11 @@ void QIBaseDriver::qHandleEventNotification(void *updatedResultBuffer)
                            eBuffer->bufferLength,
                            eBuffer->eventBuffer,
 #if defined (FB_API_VER) && FB_API_VER >= 20
-                                    reinterpret_cast<ISC_EVENT_CALLBACK>(qEventCallback),
+                           reinterpret_cast<ISC_EVENT_CALLBACK>(reinterpret_cast<void *>
+                                                                (&qEventCallback)),
 #else
-                                    reinterpret_cast<isc_callback>(qEventCallback),
+                           reinterpret_cast<isc_callback>(reinterpret_cast<void *>
+                                                          (&qEventCallback)),
 #endif
                                    eBuffer->resultBuffer);
             if (Q_UNLIKELY(status[0] == 1 && status[1])) {