diff --git a/jack/driver_interface.h b/jack/driver_interface.h
index 2da1d4f..1112ac9 100644
--- a/jack/driver_interface.h
+++ b/jack/driver_interface.h
@@ -27,6 +27,7 @@ extern "C" {
 #include <limits.h>
 
 #include <jack/jack.h>
+#include <jack/internal.h>
 
 #define JACK_DRIVER_NAME_MAX          15
 #define JACK_DRIVER_PARAM_NAME_MAX    15
diff --git a/jack/internal.h b/jack/internal.h
index 6df6862..b51ef44 100644
--- a/jack/internal.h
+++ b/jack/internal.h
@@ -81,6 +81,14 @@ const char* jack_clock_source_name (jack_timer_type_t);
 
 #include <jack/messagebuffer.h>
 
+#ifndef PATH_MAX
+    #ifdef MAXPATHLEN
+	#define PATH_MAX MAXPATHLEN
+    #else
+	#define PATH_MAX 1024
+    #endif /* MAXPATHLEN */
+#endif /* !PATH_MAX */
+
 #ifdef DEBUG_ENABLED
 
 /* grab thread id instead of PID on linux */