diff --git a/include/wx/debug.h b/include/wx/debug.h
index ee32d3a0eb..9c92739aaa 100644
--- a/include/wx/debug.h
+++ b/include/wx/debug.h
@@ -90,15 +90,11 @@
   // note using "int" and not "bool" for cond to avoid VC++ warnings about
   // implicit conversions when doing "wxAssert( pointer )" and also use of
   // "!!cond" below to ensure that everything is converted to int
-  inline void WXDLLEXPORT wxAssert(int cond,
+  extern void WXDLLEXPORT wxAssert(int cond,
                                    const wxChar *szFile,
                                    int nLine,
                                    const wxChar *szCond,
-                                   const wxChar *szMsg = NULL)
-  {
-      if ( !cond )
-          wxOnAssert(szFile, nLine, szCond, szMsg);
-  }
+                                   const wxChar *szMsg = NULL) ;
 
   // generic assert macro
   #define wxASSERT(cond) wxAssert(!!(cond), __TFILE__, __LINE__, _T(#cond))
diff --git a/src/common/appcmn.cpp b/src/common/appcmn.cpp
index 6177cbcc67..cfd1d3df14 100644
--- a/src/common/appcmn.cpp
+++ b/src/common/appcmn.cpp
@@ -494,6 +494,17 @@ void wxTrap()
 #endif // Win/Unix
 }
 
+
+void wxAssert(int cond,
+                  const wxChar *szFile,
+                  int nLine,
+                  const wxChar *szCond,
+                  const wxChar *szMsg) 
+{
+   if ( !cond )
+          wxOnAssert(szFile, nLine, szCond, szMsg);
+}
+  
 // show the assert modal dialog
 static
 void ShowAssertDialog(const wxChar *szFile,