diff --git a/macosx/JackMachServerNotifyChannel.cpp b/macosx/JackMachServerNotifyChannel.cpp
index ab686c57..2e1c9abe 100644
--- a/macosx/JackMachServerNotifyChannel.cpp
+++ b/macosx/JackMachServerNotifyChannel.cpp
@@ -50,7 +50,7 @@ void JackMachServerNotifyChannel::Notify(int refnum, int notify, int value)
 {
     kern_return_t res = rpc_jack_client_rt_notify(fClientPort.GetPort(), refnum, notify, value, 0);
     if (res != KERN_SUCCESS) {
-        jack_error("Could not write request ref = %ld notify = %ld err = %s", refnum, notify, mach_error_string(res));
+        jack_error("Could not write request ref = %d notify = %d err = %s", refnum, notify, mach_error_string(res));
     }
 }
 
diff --git a/posix/JackSocketServerNotifyChannel.cpp b/posix/JackSocketServerNotifyChannel.cpp
index b147fe06..c4e4888a 100644
--- a/posix/JackSocketServerNotifyChannel.cpp
+++ b/posix/JackSocketServerNotifyChannel.cpp
@@ -51,7 +51,7 @@ void JackSocketServerNotifyChannel::Notify(int refnum, int notify, int value)
 {
     JackClientNotificationRequest req(refnum, notify, value);
     if (req.Write(&fRequestSocket) < 0) {
-        jack_error("Could not write request ref = %ld notify = %ld", refnum, notify);
+        jack_error("Could not write request ref = %d notify = %d", refnum, notify);
     }
 }
 
diff --git a/windows/JackWinNamedPipeServerNotifyChannel.cpp b/windows/JackWinNamedPipeServerNotifyChannel.cpp
index 7f2f14cf..1e3c4e21 100644
--- a/windows/JackWinNamedPipeServerNotifyChannel.cpp
+++ b/windows/JackWinNamedPipeServerNotifyChannel.cpp
@@ -50,7 +50,7 @@ void JackWinNamedPipeServerNotifyChannel::Notify(int refnum, int notify, int val
 {
     JackClientNotificationRequest req(refnum, notify, value);
     if (req.Write(&fRequestPipe) < 0) {
-        jack_error("Could not write request ref = %ld notify = %ld", refnum, notify);
+        jack_error("Could not write request ref = %d notify = %d", refnum, notify);
     }
 }