diff --git a/include/wx/unix/execute.h b/include/wx/unix/execute.h
index 225a4c188b..745674ec60 100644
--- a/include/wx/unix/execute.h
+++ b/include/wx/unix/execute.h
@@ -71,7 +71,7 @@ extern void wxHandleProcessTermination(wxEndProcessData *proc_data);
 // child process. The return valus is port-specific.
 extern int wxAddProcessCallback(wxEndProcessData *proc_data, int fd);
 
-#if defined(__DARWIN__)
+#if defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))
 // For ports (e.g. DARWIN) which can add callbacks based on the pid
 extern int wxAddProcessCallbackForPid(wxEndProcessData *proc_data, int pid);
 #endif
diff --git a/src/unix/utilsunx.cpp b/src/unix/utilsunx.cpp
index 5455080fe0..6169570d98 100644
--- a/src/unix/utilsunx.cpp
+++ b/src/unix/utilsunx.cpp
@@ -1143,7 +1143,7 @@ int wxGUIAppTraits::WaitForChild(wxExecuteData& execData)
     }
 
 
-#if defined(__DARWIN__)
+#if defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))
     endProcData->tag = wxAddProcessCallbackForPid(endProcData, execData.pid);
 #else
     endProcData->tag = wxAddProcessCallback
@@ -1153,7 +1153,7 @@ int wxGUIAppTraits::WaitForChild(wxExecuteData& execData)
                 );
 
     execData.pipeEndProcDetect.Close();
-#endif // defined(__DARWIN__)
+#endif // defined(__DARWIN__) && (defined(__WXMAC__) || defined(__WXCOCOA__))
 
     if ( execData.flags & wxEXEC_SYNC )
     {