diff --git a/linux/alsa/JackAlsaDriver.h b/linux/alsa/JackAlsaDriver.h
index 75458522..6faa9095 100644
--- a/linux/alsa/JackAlsaDriver.h
+++ b/linux/alsa/JackAlsaDriver.h
@@ -116,7 +116,7 @@ class JackAlsaDriver : public JackAudioDriver
 
     public:
 
-        JackAlsaDriver(const char* name, const char* alias, JackEngine* engine, JackSynchro** table): JackAudioDriver(name, alias, engine, table)
+        JackAlsaDriver(const char* name, const char* alias, JackEngineInterface* engine, JackSynchro** table): JackAudioDriver(name, alias, engine, table)
         {}
         virtual ~JackAlsaDriver()
         {}
diff --git a/linux/firewire/JackFFADODriver.h b/linux/firewire/JackFFADODriver.h
index edbd9222..19cbc9fb 100644
--- a/linux/firewire/JackFFADODriver.h
+++ b/linux/firewire/JackFFADODriver.h
@@ -62,7 +62,7 @@ class JackFFADODriver : public JackAudioDriver
 
     public:
 
-        JackFFADODriver(const char* name, const char* alias, JackEngine* engine, JackSynchro** table)
+        JackFFADODriver(const char* name, const char* alias, JackEngineInterface* engine, JackSynchro** table)
             : JackAudioDriver(name, alias,engine, table)
         {}
         virtual ~JackFFADODriver()
diff --git a/linux/freebob/JackFreebobDriver.h b/linux/freebob/JackFreebobDriver.h
index 51b130f2..e68bd34a 100644
--- a/linux/freebob/JackFreebobDriver.h
+++ b/linux/freebob/JackFreebobDriver.h
@@ -69,7 +69,7 @@ class JackFreebobDriver : public JackAudioDriver
 
     public:
 
-        JackFreebobDriver(const char* name, const char* alias, JackEngine* engine, JackSynchro** table)
+        JackFreebobDriver(const char* name, const char* alias, JackEngineInterface* engine, JackSynchro** table)
             :JackAudioDriver(name, alias, engine, table)
         {}
         virtual ~JackFreebobDriver()