diff --git a/src/private/dotherside.nim b/src/private/dotherside.nim
index 6771797..c2d8ec7 100644
--- a/src/private/dotherside.nim
+++ b/src/private/dotherside.nim
@@ -134,9 +134,9 @@ proc dos_qabstractlistmodel_qmetaobject(vptr: var DosQmetaObject) {.cdecl import
 proc dos_qmetaobject_create(vptr: var DosQmetaObject,
                              superclassMetaObject: DosQMetaObject,
                              className: cstring,
-                             signalDefinitions: DosSignalDefinitions,
-                             slotDefinitions: DosSlotDefinitions,
-                             propertyDefinitions: DosPropertyDefinitions) {.cdecl, importc.}
+                             signalDefinitions: ptr DosSignalDefinitions,
+                             slotDefinitions: ptr DosSlotDefinitions,
+                             propertyDefinitions: ptr DosPropertyDefinitions) {.cdecl, importc.}
 proc dos_qmetaobject_delete(vptr: DosQmetaObject) {.cdecl, importc.}
 
 # QUrl
diff --git a/src/private/qmetaobject.nim b/src/private/qmetaobject.nim
index 6025d11..b3b04d6 100644
--- a/src/private/qmetaobject.nim
+++ b/src/private/qmetaobject.nim
@@ -59,7 +59,9 @@ proc newQMetaObject*(superClass: QMetaObject, className: string,
                                             notifySignal: notifySignal)
     dosProperties.add(dosProperty)
 
+  let signals = DosSignalDefinitions(count: dosSignals.len.cint, definitions: if dosSignals.len > 0: dosSignals[0].unsafeAddr else: nil)
+  let slots = DosSlotDefinitions(count: dosSlots.len.cint, definitions: if dosSlots.len > 0: dosSlots[0].unsafeAddr else: nil)
+  let properties = DosPropertyDefinitions(count: dosProperties.len.cint, definitions: if dosProperties.len > 0: dosProperties[0].unsafeAddr else: nil)
+
   dos_qmetaobject_create(result.vptr, superClass.vptr, className.cstring,
-                         DosSignalDefinitions(count: dosSignals.len.cint, definitions: if dosSignals.len > 0: dosSignals[0].unsafeAddr else: nil),
-                         DosSlotDefinitions(count: dosSlots.len.cint, definitions: if dosSlots.len > 0: dosSlots[0].unsafeAddr else: nil),
-                         DosPropertyDefinitions(count: dosProperties.len.cint, definitions: if dosProperties.len > 0: dosProperties[0].unsafeAddr else: nil))
+                         signals.unsafeAddr, slots.unsafeAddr, properties.unsafeAddr)