diff --git a/src/cocoa/evtloop.mm b/src/cocoa/evtloop.mm
index 4a3a94be67..add5528e94 100644
--- a/src/cocoa/evtloop.mm
+++ b/src/cocoa/evtloop.mm
@@ -48,8 +48,6 @@ private:
 // wxEventLoop running and exiting
 // ----------------------------------------------------------------------------
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 wxEventLoop::~wxEventLoop()
 {
     wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
diff --git a/src/common/appcmn.cpp b/src/common/appcmn.cpp
index e19c11697a..69731dd219 100644
--- a/src/common/appcmn.cpp
+++ b/src/common/appcmn.cpp
@@ -63,6 +63,9 @@ WX_CHECK_BUILD_OPTIONS("wxCore")
 // this defines wxEventLoopPtr
 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxEventLoop)
 
+// define it here as we don't have common/evtloopcmn.cpp for now
+wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
+
 // ============================================================================
 // wxAppBase implementation
 // ============================================================================
diff --git a/src/gtk/evtloop.cpp b/src/gtk/evtloop.cpp
index 7d9af25874..d684ccb0eb 100644
--- a/src/gtk/evtloop.cpp
+++ b/src/gtk/evtloop.cpp
@@ -56,8 +56,6 @@ private:
 // wxEventLoop running and exiting
 // ----------------------------------------------------------------------------
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 wxEventLoop::~wxEventLoop()
 {
     wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
diff --git a/src/gtk1/evtloop.cpp b/src/gtk1/evtloop.cpp
index 7d9af25874..d684ccb0eb 100644
--- a/src/gtk1/evtloop.cpp
+++ b/src/gtk1/evtloop.cpp
@@ -56,8 +56,6 @@ private:
 // wxEventLoop running and exiting
 // ----------------------------------------------------------------------------
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 wxEventLoop::~wxEventLoop()
 {
     wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
diff --git a/src/mgl/evtloop.cpp b/src/mgl/evtloop.cpp
index 10f6b5d12e..58c868ada8 100644
--- a/src/mgl/evtloop.cpp
+++ b/src/mgl/evtloop.cpp
@@ -104,8 +104,6 @@ bool wxEventLoopImpl::SendIdleEvent()
 // wxEventLoop running and exiting
 // ----------------------------------------------------------------------------
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 wxEventLoop::~wxEventLoop()
 {
     wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
diff --git a/src/motif/evtloop.cpp b/src/motif/evtloop.cpp
index c8380862ba..424b96c5ab 100644
--- a/src/motif/evtloop.cpp
+++ b/src/motif/evtloop.cpp
@@ -96,8 +96,6 @@ bool wxEventLoopImpl::SendIdleMessage()
 // wxEventLoop running and exiting
 // ----------------------------------------------------------------------------
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 wxEventLoop::~wxEventLoop()
 {
     wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
diff --git a/src/msw/evtloop.cpp b/src/msw/evtloop.cpp
index 2b6dd09984..7b08e7deca 100644
--- a/src/msw/evtloop.cpp
+++ b/src/msw/evtloop.cpp
@@ -52,7 +52,6 @@
 // wxEventLoop implementation
 // ============================================================================
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
 wxWindowMSW *wxEventLoop::ms_winCritical = NULL;
 
 // ----------------------------------------------------------------------------
diff --git a/src/os2/evtloop.cpp b/src/os2/evtloop.cpp
index 08b13d53de..8ed9c42574 100644
--- a/src/os2/evtloop.cpp
+++ b/src/os2/evtloop.cpp
@@ -199,8 +199,6 @@ bool wxEventLoopImpl::SendIdleMessage()
 // wxEventLoop implementation
 // ============================================================================
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 // ----------------------------------------------------------------------------
 // wxEventLoop running and exiting
 // ----------------------------------------------------------------------------
diff --git a/src/palmos/evtloop.cpp b/src/palmos/evtloop.cpp
index 51dce71214..ec93249cbc 100644
--- a/src/palmos/evtloop.cpp
+++ b/src/palmos/evtloop.cpp
@@ -55,8 +55,6 @@
 // wxEventLoop implementation
 // ============================================================================
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 // ----------------------------------------------------------------------------
 // ctor/dtor
 // ----------------------------------------------------------------------------
diff --git a/src/x11/evtloop.cpp b/src/x11/evtloop.cpp
index b44f46e8de..408d6fee34 100644
--- a/src/x11/evtloop.cpp
+++ b/src/x11/evtloop.cpp
@@ -339,8 +339,6 @@ bool wxEventLoopImpl::SendIdleEvent()
 // wxEventLoop implementation
 // ============================================================================
 
-wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
-
 // ----------------------------------------------------------------------------
 // wxEventLoop running and exiting
 // ----------------------------------------------------------------------------