diff --git a/src/rig/RigThread.h b/src/rig/RigThread.h
index 9aadd86..af65fb9 100644
--- a/src/rig/RigThread.h
+++ b/src/rig/RigThread.h
@@ -8,6 +8,10 @@
 #include <hamlib/rig.h>
 #include <hamlib/riglist.h>
 
+#ifndef FILPATHLEN
+	#define FILPATHLEN HAMLIB_FILPATHLEN
+#endif
+
 struct rigGreater
 {
     bool operator()( const struct rig_caps *lx, const struct rig_caps *rx ) const {
@@ -64,4 +68,4 @@ private:
     std::atomic_bool errorState;
     std::string errorMessage;
     static RigList rigCaps;
-};
\ No newline at end of file
+};