diff --git a/Sources/Plasma/CoreLib/hsUtils.cpp b/Sources/Plasma/CoreLib/hsUtils.cpp
index ba7f085a..45e5f0e0 100644
--- a/Sources/Plasma/CoreLib/hsUtils.cpp
+++ b/Sources/Plasma/CoreLib/hsUtils.cpp
@@ -97,7 +97,7 @@ public:
 
 bool hsMessageBox_SuppressPrompts = false;
 
-int hsMessageBoxWithOwner(void * owner, const char message[], const char caption[], int kind, int icon)
+int hsMessageBoxWithOwner(hsWindowHndl owner, const char message[], const char caption[], int kind, int icon)
 {
     if (hsMessageBox_SuppressPrompts)
         return hsMBoxOk;
@@ -132,7 +132,7 @@ int hsMessageBoxWithOwner(void * owner, const char message[], const char caption
         flags |= MB_ICONERROR;
 
     hsMinimizeClientGuard guard;
-    int ans = MessageBox((HWND)owner, message, caption, flags);
+    int ans = MessageBox(owner, message, caption, flags);
 
     switch (ans)
     {
@@ -149,7 +149,7 @@ int hsMessageBoxWithOwner(void * owner, const char message[], const char caption
 #endif
 }
 
-int hsMessageBoxWithOwner(void * owner, const wchar_t message[], const wchar_t caption[], int kind, int icon)
+int hsMessageBoxWithOwner(hsWindowHndl owner, const wchar_t message[], const wchar_t caption[], int kind, int icon)
 {
     if (hsMessageBox_SuppressPrompts)
         return hsMBoxOk;
@@ -184,7 +184,7 @@ int hsMessageBoxWithOwner(void * owner, const wchar_t message[], const wchar_t c
         flags |= MB_ICONERROR;
     
     hsMinimizeClientGuard guard;
-    int ans = MessageBoxW((HWND)owner, message, caption, flags);
+    int ans = MessageBoxW(owner, message, caption, flags);
     
     switch (ans)
     {
@@ -203,20 +203,12 @@ int hsMessageBoxWithOwner(void * owner, const wchar_t message[], const wchar_t c
 
 int hsMessageBox(const char message[], const char caption[], int kind, int icon)
 {
-#if HS_BUILD_FOR_WIN32
-    return hsMessageBoxWithOwner(nil/*GetActiveWindow()*/,message,caption,kind,icon);
-#else
-    return hsMessageBoxWithOwner(nil,message,caption,kind,icon);
-#endif
+    return hsMessageBoxWithOwner((hsWindowHndl)nil,message,caption,kind,icon);
 }
 
 int hsMessageBox(const wchar_t message[], const wchar_t caption[], int kind, int icon)
 {
-#if HS_BUILD_FOR_WIN32
-    return hsMessageBoxWithOwner(nil/*GetActiveWindow()*/,message,caption,kind,icon);
-#else
-    return hsMessageBoxWithOwner(nil,message,caption,kind,icon);
-#endif
+    return hsMessageBoxWithOwner((hsWindowHndl)nil,message,caption,kind,icon);
 }
 
 inline hsBool hsCompare(float a, float b, float delta)
diff --git a/Sources/Plasma/CoreLib/hsUtils.h b/Sources/Plasma/CoreLib/hsUtils.h
index 64733ae9..8bf36fef 100644
--- a/Sources/Plasma/CoreLib/hsUtils.h
+++ b/Sources/Plasma/CoreLib/hsUtils.h
@@ -126,8 +126,8 @@ enum {          // RETURN VALUES FROM hsMessageBox
 extern bool hsMessageBox_SuppressPrompts;
 int hsMessageBox(const char message[], const char caption[], int kind, int icon=hsMessageBoxIconAsterisk);
 int hsMessageBox(const wchar_t message[], const wchar_t caption[], int kind, int icon=hsMessageBoxIconAsterisk);
-int hsMessageBoxWithOwner(void* owner, const char message[], const char caption[], int kind, int icon=hsMessageBoxIconAsterisk);
-int hsMessageBoxWithOwner(void* owner, const wchar_t message[], const wchar_t caption[], int kind, int icon=hsMessageBoxIconAsterisk);
+int hsMessageBoxWithOwner(hsWindowHndl owner, const char message[], const char caption[], int kind, int icon=hsMessageBoxIconAsterisk);
+int hsMessageBoxWithOwner(hsWindowHndl owner, const wchar_t message[], const wchar_t caption[], int kind, int icon=hsMessageBoxIconAsterisk);
 
 inline hsBool hsCompare(float a, float b, float delta=0.0001);